Common Weakness Enumeration

CWE-290

Allowed

Authentication Bypass by Spoofing

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

525 vulnerabilities reference this CWE, most recent first.

CVE-2026-123587 (GCVE-0-2026-123587)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:38 – Updated: 2026-11-08 01:38
VLAI
Title
Hickory-DNS 0.26.0 before 0.26.2 DNSSEC Nonexistence Forgery via Wraparound NSEC
Summary
The DNSSEC validation in the Hickory DNS hickory-net crate 0.26.0 before 0.26.2 identifies wraparound NSEC records by comparing the next domain name to an SOA record in the response, accepting that SOA even if it fails validation. Attackers who can supply DNS responses can combine a genuine NSEC record and its RRSIG with a crafted SOA record to forge nonexistence of any RRset.
Severity
8.9 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N
6.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
hickory-dns hickory-dns Affected: 0.26.0 , < 0.26.2 (semver)
Unaffected: 0.26.2 (semver)
Create a notification for this product.
Date Public
2026-09-03 00:00
Credits
qifan-sailboat
Show details on NVD website
To clipboard 

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CVE-2026-123580 (GCVE-0-2026-123580)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:38 – Updated: 2026-11-08 01:38
VLAI
Title
Hickory-DNS 0.26.0-beta.1 before 0.26.2 DNSSEC Nonexistence Proof Forgery via NSEC3
Summary
Hickory DNS hickory-net 0.26.0-beta.1 before 0.26.2 and hickory-proto through 0.26.0-alpha.1 perform insufficient checks on NSEC3 record names during DNSSEC verification, comparing only the hashed label without confirming the record belongs to the correct zone. Attackers can supply NSEC3 records from another zone with a matching hash label to forge DNSSEC nonexistence proofs.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
hickory-dns hickory-dns Affected: 0.26.0-beta.1 , < 0.26.2 (semver)
Unaffected: 0.26.2 (semver)
Create a notification for this product.
hickory-dns hickory-dns Affected: 0 , ≤ 0.26.0-alpha.1 (semver)
Create a notification for this product.
Date Public
2026-09-03 00:00
Credits
qifan-sailboat
Show details on NVD website
To clipboard 

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CVE-2026-123578 (GCVE-0-2026-123578)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:38 – Updated: 2026-11-09 13:55
VLAI
Title
Hickory DNS 0.26.0 before 0.26.2 Response Validation Bypass via QDCOUNT=0
Summary
Hickory DNS hickory-net 0.26.0 before 0.26.2 and hickory-proto 0.25.0 through 0.25.2 skip the check that a UDP response's question section matches the query when the response has an empty question section (QDCOUNT=0), and also skip the case-randomization check. Remote attackers able to inject spoofed UDP responses can send QDCOUNT=0 responses to bypass these checks, weakening defenses against DNS spoofing.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 13:55 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
hickory-dns hickory-dns Affected: 0.26.0 , < 0.26.2 (semver)
Unaffected: 0.26.2 (semver)
Create a notification for this product.
hickory-dns hickory-dns Affected: 0.25.0 , ≤ 0.25.2 (semver)
Create a notification for this product.
Date Public
2026-09-03 00:00
Credits
qifan-sailboat
Show details on NVD website
To clipboard 

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CVE-2026-123550 (GCVE-0-2026-123550)

Vulnerability from cvelistv5 – Published: 2026-11-08 01:37 – Updated: 2026-11-09 13:58
VLAI
Title
OpenAM before 16.1.4 SAML Authentication Bypass via Unsigned Assertions
Summary
OpenAM before 16.1.4 contains an authentication bypass vulnerability in its SAML v2.0 service provider that accepts unsigned assertions on the ECP (PAOS) and HTTP-Artifact bindings when WantAssertionsSigned is false. Unauthenticated remote attackers can submit forged assertions to obtain sessions as any mapped user, including administrators, and hijack single sign-on to dependent applications.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 13:58 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
OpenIdentityPlatform OpenAM Affected: 0 , < 16.1.4 (semver)
Unaffected: 16.1.4 (semver)
Create a notification for this product.
Date Public
2026-10-22 00:00
Credits
rockmelodies vharseko maximthomas tsujiguchitky
Show details on NVD website
To clipboard 

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CVE-2026-123033 (GCVE-0-2026-123033)

Vulnerability from cvelistv5 – Published: 2026-11-05 06:58 – Updated: 2026-11-05 06:58
VLAI
Summary
Authentication bypass in the HA heartbeat origin check in middlewared in TrueNAS SCALE before 25.10.8 (and in release trains before their respective fixes) allows an attacker on the same network segment to achieve unauthenticated full-administrator API access and execute commands as root. middlewared registers the HA peer-authentication hook (ha_permission) unconditionally, with no failover-licence or heartbeat-interface check. An unauthenticated connection whose TCP peer address is a hardcoded HA heartbeat address (169.254.10.1 or 169.254.10.2) and whose peer port is <= 1024 is granted a node credential that is authorized for every API method and treated as full administrator. Both conditions are properties of the attacker's own socket, and thus an attacker on the same layer-2 segment satisfies them without forging anything. The hook is present on non-HA, unlicensed, single-node Community Edition installations. The fix additionally requires that the connection terminate on the HA heartbeat listener (a local address/port the attacker cannot control).
Severity
8.3 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
mitre CNA
References
Impacted products
Vendor Product Version
iXsystems TrueNAS SCALE Affected: 0 , < 25.10.8 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-123017 (GCVE-0-2026-123017)

Vulnerability from cvelistv5 – Published: 2026-11-05 06:17 – Updated: 2026-11-05 22:05
VLAI
Summary
GodotSteam 4.17 through 4.23.2 trusts the peer value of 1 to mean that a player is the server. A grant_gold(1000000) call can be forged.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
mitre CNA
References
Impacted products
Vendor Product Version
godotsteam GodotSteam Affected: 4.17.0 , ≤ 4.23.2 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-121939 (GCVE-0-2026-121939)

Vulnerability from cvelistv5 – Published: 2026-11-04 12:31 – Updated: 2026-11-04 18:54
VLAI
Title
Databasement before 1.10.9 Account Takeover via OIDC Email Auto-Linking
Summary
Databasement before 1.10.9 contains an authentication bypass vulnerability in OAuthService::findOrCreateLocalUser() that links OIDC identities to local users by email without checking email_verified. Attackers can register an identity provider account with a victim's unverified email to log in as any user, including the super-admin, and retain access after password resets.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 18:54 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
David-Crty Databasement Affected: 0 , < 1.10.9 (semver)
Create a notification for this product.
Date Public
2026-11-03 23:19
Credits
chinosk
Show details on NVD website
To clipboard 

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CVE-2026-119744 (GCVE-0-2026-119744)

Vulnerability from cvelistv5 – Published: 2026-11-05 14:50 – Updated: 2026-11-05 16:24
VLAI
Title
Cendio ThinLinc Improper Authentication via Web Access
Summary
Cendio ThinLinc contains an improper authentication vulnerability in its browser-based web client (tlwebaccess) that allows an authenticated attacker to impersonate any other user, including root, by exploiting flaws in multi-step authentication flows such as one-time passwords, login banners, or expired password prompts. Attackers can leverage this authentication bypass during the multi-step login process to gain unauthorized access to other user accounts, including administrative privileges, in versions from 4.1.0 through 4.20.0.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 16:24 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
Cendio ThinLinc Affected: 4.1.0 , < 4.15.1 (semver)
Affected: 4.16.0 , < 4.16.1 (semver)
Affected: 4.17.0 , < 4.17.1 (semver)
Affected: 4.18.0 , < 4.18.1 (semver)
Affected: 4.19.0 , < 4.19.1 (semver)
Affected: 4.20.0 , < 4.20.1 (semver)
Create a notification for this product.
Date Public
2026-04-22 00:00
Credits
Cosmikal S.L.
Show details on NVD website
To clipboard 

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CVE-2026-119703 (GCVE-0-2026-119703)

Vulnerability from cvelistv5 – Published: 2026-10-30 15:16 – Updated: 2026-11-04 22:49
VLAI
Title
xiaozhi-esp32-server through 0.9.8 Authentication Bypass via Spoofed Device-ID Header
Summary
xiaozhi-esp32-server through 0.9.8 contains an authentication bypass vulnerability in WebSocketServer._handle_auth that allows remote unauthenticated attackers to skip Bearer HMAC token verification by spoofing the Device-ID header. Attackers supplying an allowlisted MAC-address-shaped device identifier can open an authenticated WebSocket session, issue voice-assistant commands, exchange audio, and read that device's conversation context.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 22:48 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
xinnan-tech xiaozhi-esp32-server Affected: 0 , ≤ 0.9.8 (semver)
Create a notification for this product.
Date Public
2026-10-18 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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CVE-2026-119425 (GCVE-0-2026-119425)

Vulnerability from cvelistv5 – Published: 2026-10-30 11:30 – Updated: 2026-10-30 15:55
VLAI
Title
OPNsense 26.1.6 through 26.7.7 Captive Portal Session Takeover via Forged ARP
Summary
OPNsense core 26.1.6 through 26.7.7 contains an authentication bypass vulnerability in the captive portal roaming feature that lets unauthenticated attackers hijack authorized client sessions by spoofing unauthenticated MAC-to-IP observations. Attackers on the same Layer-2 segment can send forged gratuitous ARP replies binding their IP to a victim's MAC, gaining portal access with traffic attributed to the victim.
Severity
5.3 (Medium)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 15:20 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
opnsense core Affected: 26.1.6 , ≤ 26.7.7 (semver)
    cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-26 00:00
Credits
lujiefsi Abraxas Labs
Show details on NVD website
To clipboard 

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    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-119425",
    "datePublished": "2026-10-30T11:30:55.121Z",
    "dateReserved": "2026-10-30T02:41:13.938Z",
    "dateUpdated": "2026-10-30T15:55:05.938Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

No mitigation information available for this CWE.

CAPEC-21: Exploitation of Trusted Identifiers

An adversary guesses, obtains, or "rides" a trusted identifier (e.g. session ID, resource ID, cookie, etc.) to perform authorized actions under the guise of an authenticated user or service.

CAPEC-22: Exploiting Trust in Client

An attack of this type exploits vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by communicating directly with the server where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.

CAPEC-459: Creating a Rogue Certification Authority Certificate

An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.

CAPEC-461: Web Services API Signature Forgery Leveraging Hash Function Extension Weakness

An adversary utilizes a hash function extension/padding weakness, to modify the parameters passed to the web service requesting authentication by generating their own call in order to generate a legitimate signature hash (as described in the notes), without knowledge of the secret token sometimes provided by the web service.

CAPEC-473: Signature Spoof

An attacker generates a message or datablock that causes the recipient to believe that the message or datablock was generated and cryptographically signed by an authoritative or reputable source, misleading a victim or victim operating system into performing malicious actions.

CAPEC-476: Signature Spoofing by Misrepresentation

An attacker exploits a weakness in the parsing or display code of the recipient software to generate a data blob containing a supposedly valid signature, but the signer's identity is falsely represented, which can lead to the attacker manipulating the recipient software or its victim user to perform compromising actions.

CAPEC-59: Session Credential Falsification through Prediction

This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

CAPEC-60: Reusing Session IDs (aka Session Replay)

This attack targets the reuse of valid session ID to spoof the target system in order to gain privileges. The attacker tries to reuse a stolen session ID used previously during a transaction to perform spoofing and session hijacking. Another name for this type of attack is Session Replay.

CAPEC-667: Bluetooth Impersonation AttackS (BIAS)

An adversary disguises the MAC address of their Bluetooth enabled device to one for which there exists an active and trusted connection and authenticates successfully. The adversary can then perform malicious actions on the target Bluetooth device depending on the target’s capabilities.

CAPEC-94: Adversary in the Middle (AiTM)

An adversary targets the communication between two components (typically client and server), in order to alter or obtain data from transactions. A general approach entails the adversary placing themself within the communication channel between the two components.

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