Common Weakness Enumeration

CWE-1391

Allowed-with-Review

Use of Weak Credentials

Abstraction: Class · Status: Incomplete

The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.

55 vulnerabilities reference this CWE, most recent first.

CVE-2026-59105 (GCVE-0-2026-59105)

Vulnerability from cvelistv5 – Published: 2026-11-06 14:09 – Updated: 2026-11-06 15:21
VLAI
Title
Universal sysadmin credential vulnerability in Jumis
Summary
Jumis (formerly Tildes Jumis) creates and uses a Microsoft SQL Server login named ##Tilde_JumisAdmin## whose password is derived deterministically from a single non-secret input - the SQL Server name (@@servername). The derivation algorithm is hard-coded in the client application and is identical across every installation; it contains a hard-coded secret key for entropy. Because the only input (the server name) is not secret - the instance suffix is hard-coded and the host name is discoverable via the SQL Server Browser service (UDP 1434), the TDS pre-login response, or DNS/NetBIOS - any party able to reach a Jumis SQL Server can compute the password offline and authenticate. The ##Tilde_JumisAdmin## login is a member of the sysadmin server role. Successful authentication therefore grants full administrative control of the SQL Server instance and read/write access to every customer's accounting database hosted on it. The on-premise server installation also programmatically enables xp_cmdshell during routine operation, so sysadmin access escalates to operating-system command execution on the database server.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 14:55 UTC
CWE
  • CWE-1391 - Use of Weak Credentials
  • CWE-547 - Use of hard-coded, security-relevant constants
Assigner
ENISA CNA
References
Impacted products
Vendor Product Version
Jumis Pro SIA Jumis Affected: 0 , < TJ7.0.141.36 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-57473 (GCVE-0-2026-57473)

Vulnerability from cvelistv5 – Published: 2026-06-26 10:47 – Updated: 2026-06-26 12:01
VLAI
Summary
A vulnerability exists in the netclient and factory services of Reolink Home Hub (versions prior to v3.3.0.456_26031911) due to the possibility of brute-force cracking the credentials. This issue could allow attackers on the same local network to intercept traffic between the Hub and associated cameras and compromise the credentials of connected cameras.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-26 12:01 UTC
CWE
Assigner
Nozomi CNA
References
Impacted products
Vendor Product Version
Reolink Home Hub Affected: 0 , < 3.3.0.456_26031911 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-49852 (GCVE-0-2026-49852)

Vulnerability from cvelistv5 – Published: 2026-07-17 19:14 – Updated: 2026-07-20 14:58
VLAI
Title
joserfc: HS256/HS384/HS512 verify accepts empty/nil HMAC key (cross-language sibling of CVE-2026-45363)
Summary
joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to 1.6.8, joserfc.jwt.decode accepts attacker-forged HMAC-signed tokens when the caller-supplied verification key is the empty string or None, because HMACAlgorithm.sign and HMACAlgorithm.verify in src/joserfc/_rfc7518/jws_algs.py pass the output of OctKey.get_op_key(...) to hmac.new(...) and OctKey.import_key in src/joserfc/_rfc7518/oct_key.py only emits a SecurityWarning for keys shorter than 14 bytes without rejecting zero-length input. This issue is fixed in version 1.6.8.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 14:58 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-326 - Inadequate Encryption Strength
  • CWE-1391 - Use of Weak Credentials
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
authlib joserfc Affected: < 1.6.8
Create a notification for this product.
Show details on NVD website

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CVE-2026-47325 (GCVE-0-2026-47325)

Vulnerability from cvelistv5 – Published: 2026-06-03 13:28 – Updated: 2026-06-03 15:50 X_Open Source
VLAI
Title
Weak password policy in ProjectsAndPrograms school-management-system
Summary
ProjectsAndPrograms school-management-system uses predictable credentials by generating student's and teacher's passwords solely from the user’s date of birth (e.g., 12072000 for 12 July 2000). The application does not require or prompt users to change the password upon first login. This behavior allows attackers to easily guess or derive valid credentials, leading to unauthorized account access. The maintainers were notified early about this vulnerability but did not provide details regarding affected versions. The version corresponding to commit 6b6fae5 was tested and confirmed vulnerable; other versions were not tested and may also be affected.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 15:50 UTC
CWE
Assigner
CERT-PL CNA
Impacted products
Show details on NVD website

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CVE-2026-46623 (GCVE-0-2026-46623)

Vulnerability from cvelistv5 – Published: 2026-09-15 09:52 – Updated: 2026-09-17 14:08
VLAI
Title
OpenAM Account Takeover via Unverified Password Change in OAuth2 Module
Summary
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the OAuth2 authentication module updates an existing local account with profile attributes that can include userPassword and inetUserStatus, rewriting the password to the username and reactivating disabled accounts. The missing OAuth.removeRestrictedAccountUpdateAttributes filtering permits these credential and status fields to reach the account update. With account creation enabled, repeated OAuth login causes the default ldapService chain to accept the username as both identifier and password, allowing an unauthenticated attacker to take over the local account without interacting with the identity provider. The rewrite can be denied for usernames shorter than the configured minimum password length. This issue is fixed in version 16.1.1.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 14:07 UTC
CWE
Assigner
GitHub_M CNA
Impacted products
Show details on NVD website

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CVE-2026-45363 (GCVE-0-2026-45363)

Vulnerability from cvelistv5 – Published: 2026-07-14 21:32 – Updated: 2026-09-19 18:07
VLAI
Title
`jwt` (Ruby gem) - empty-key HMAC bypass
Summary
ruby-jwt is a Ruby implementation of the RFC 7519 OAuth JSON Web Token standard. Prior to 2.10.3 and 3.2.0, JWT.decode(token, '', true, algorithm: 'HS256') accepts an attacker-forged token because OpenSSL::HMAC.digest('SHA256', '', payload) returns a valid digest under an empty key and no empty-key precondition exists in the HMAC algorithm. The same path is reached when a keyfinder block or key_finder: argument returns an empty string, nil, or an array containing nil for an unknown key, affecting HS256, HS384, and HS512 verification through JWT.decode and JWT::EncodedToken#verify_signature!. This issue is fixed in versions 2.10.3 and 3.2.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 13:24 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-326 - Inadequate Encryption Strength
  • CWE-1391 - Use of Weak Credentials
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
jwt ruby-jwt Affected: < 2.10.3
Affected: >= 3.0.0, < 3.2.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-44351 (GCVE-0-2026-44351)

Vulnerability from cvelistv5 – Published: 2026-05-13 19:12 – Updated: 2026-05-14 18:13
VLAI
Title
fast-jwt: Empty HMAC secret accepted via async key resolver - JWT auth bypass
Summary
fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.2.4, a critical authentication-bypass vulnerability in fast-jwt's async key-resolver flow allows any unauthenticated attacker to forge arbitrary JWTs that are accepted as authentic. When the application's key resolver returns an empty string (''), for example via the common keys[decoded.header.kid] || '' JWKS-style fallback, fast-jwt converts it to a zero-length Buffer, hands it to crypto.createSecretKey, derives allowedAlgorithms = ['HS256','HS384','HS512'] from it, and then verifies the token's signature against an empty-key HMAC. The attacker simply computes HMAC-SHA256(key='', input='${header}.${payload}'), which Node accepts without complaint — and the verifier returns the attacker-chosen payload (sub, admin, scopes, etc.) as authentic. This vulnerability is fixed in 6.2.4.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 18:13 UTC
CWE
  • CWE-287 - Improper Authentication
  • CWE-326 - Inadequate Encryption Strength
  • CWE-1391 - Use of Weak Credentials
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
nearform fast-jwt Affected: < 6.2.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-39920 (GCVE-0-2026-39920)

Vulnerability from cvelistv5 – Published: 2026-04-24 15:48 – Updated: 2026-04-24 18:17
VLAI
Title
BridgeHead FileStore < 24A Apache Axis2 Default Credentials RCE
Summary
BridgeHead FileStore versions prior to 24A (released in early 2024) expose the Apache Axis2 administration module on network-accessible endpoints with default credentials that allows unauthenticated remote attackers to execute arbitrary OS commands. Attackers can authenticate to the admin console using default credentials, upload a malicious Java archive as a web service, and execute arbitrary commands on the host via SOAP requests to the deployed service.
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-24 17:25 UTC
CWE
  • CWE-1188 - Initialization of a Resource with an Insecure Default
  • CWE-1391 - Use of Weak Credentials
Assigner
VulnCheck CNA
Impacted products
Vendor Product Version
BridgeHead Software FileStore Affected: 0 , < 24A (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-35089 (GCVE-0-2026-35089)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:42 – Updated: 2026-05-27 15:31
VLAI
Title
Use of Weak Credentials in Slican telephone exchanges
Summary
In Slican telephone exchanges secure key is generated in a predictable manner using properties of the telephone exchange which can be obtained without authentication. An unauthenticated attacker can deduce the secure key and obtain admin credentials. This issue was fixed in versions below: - IPx series: version 6.61.0040 - CCT-1668: version 6.56.0430 - MAC-6400: version 6.56.0430 - CXS-0424: version 6.30.0510 The issue STILL EXISTS in End-Of-Life telephone exchanges in versions 4.xx and below: - CCT-1668 (CCT1CPU) - MAC-6400 - CXS-0424 These products were discontinued in 2011 and 2012 and and will not receive updates. These products require a hardware update in order to receive a software update. The vendor recommends that users of these devices contact the their service department directly to determine the options for upgrading.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:30 UTC
CWE
Assigner
CERT-PL CNA
References
URL Tags
https://cert.pl/posts/2026/05/CVE-2026-35087 third-party-advisory
Impacted products
Vendor Product Version
Slican IPx Affected: 0 , < 6.61.0040 (semver)
Create a notification for this product.
Slican CCT-1668 Affected: 0 , < 6.56.0430 (semver)
Create a notification for this product.
Slican MAC-6400 Affected: 0 , < 6.56.0430 (semver)
Create a notification for this product.
Slican CXS-0424 Affected: 0 , < 6.30.0510 (semver)
Create a notification for this product.
Date Public
2026-05-27 12:42
Credits
Show details on NVD website

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CVE-2026-24449 (GCVE-0-2026-24449)

Vulnerability from cvelistv5 – Published: 2026-02-03 06:57 – Updated: 2026-02-03 15:54
VLAI
Summary
For WRC-X1500GS-B and WRC-X1500GSA-B, the initial passwords can be calculated easily from the system information.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 15:53 UTC
CWE
Assigner
jpcert CNA
Impacted products
Show details on NVD website

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Mitigation
Architecture and Design Operation

When the user changes or sets a password, check the password against a database of already compromised or breached passwords. These passwords are likely to be used in password guessing attacks.

No CAPEC attack patterns related to this CWE.