Common Weakness Enumeration

CWE-347

Allowed

Improper Verification of Cryptographic Signature

Abstraction: Base · Status: Draft

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

688 vulnerabilities reference this CWE, most recent first.

CVE-2026-119037 (GCVE-0-2026-119037)

Vulnerability from cvelistv5 – Published: 2026-10-30 12:56 – Updated: 2026-11-06 15:53
VLAI
Title
Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty
Summary
Business::GoCardless versions before 1.01 for Perl accept forged webhooks when a configured webhook secret is undef or empty. signature_valid uses each configured secret as the HMAC key, and nothing rejects undef or an empty string, both of which Digest::SHA treats as an empty key. A secret read from an unset environment variable, or an empty entry in a list of rotated secrets, is used as is. A remote attacker can sign a forged webhook with an empty key and have it accepted as sent by GoCardless.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 15:53 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
CPANSec CNA
References
Impacted products
Vendor Product Version
Affected: 0 , < 1.01 (custom)
Show details on NVD website

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CVE-2026-118774 (GCVE-0-2026-118774)

Vulnerability from cvelistv5 – Published: 2026-10-29 18:33 – Updated: 2026-11-03 16:17
VLAI
Title
Forge: Certificate signature verified with the issuer's RSA signature scheme
Summary
Forge (also called node-forge) is a native implementation of Transport Layer Security in JavaScript. Prior to 1.4.1, the affected implementation used certificate.verify(child), _verifySignature(), lib/x509.js to process the relevant input or security decision. node-forge selected RSA padding and RSASSA-PSS parameters from the issuer certificate rather than the child certificate being verified. A child labeled as RSASSA-PSS could therefore be accepted with a PKCS#1 v1.5 signature when the issuer used PKCS#1 v1.5. The signature still had to be produced with the trusted issuer's private key, so this did not permit certificate identity forgery, but it could bypass policies that require a declared signature scheme. This issue is fixed in version 1.4.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 16:07 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
digitalbazaar forge Affected: < 1.4.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-118768 (GCVE-0-2026-118768)

Vulnerability from cvelistv5 – Published: 2026-10-29 17:20 – Updated: 2026-11-03 16:06
VLAI
Title
Botan: CLI utility `ocsp_check` accepts unauthenticated responses
Summary
Botan is a C++ cryptography library. From 1.11.34 until 3.13.0, the botan ocsp_check command requested an OCSP response from a certificate's Authority Information Access URL without verifying the response signature or authorizing the signer. A malicious responder or on-path attacker could return a matching and timely GOOD response with an empty, invalid, or unauthorized signature, causing a revoked certificate to produce exit status 0 and OCSP check OK output. Only the command-line interface is affected. This issue is fixed in version 3.13.0.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 16:06 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
randombit botan Affected: >= 1.11.34, < 3.13.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-118559 (GCVE-0-2026-118559)

Vulnerability from cvelistv5 – Published: 2026-10-30 03:09 – Updated: 2026-11-06 13:02
VLAI
Title
Commerce Stripe - Moderately critical - Improper verification of cryptographic signature - SA-CONTRIB-2026-264
Summary
Improper Verification of Cryptographic Signature vulnerability in Drupal Commerce Stripe allows Signature Spoof. This issue affects Commerce Stripe versions: from 0.0.0 to 1.4, from 2.0.0 to 2.2.3.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 13:02 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
drupal CNA
References
Impacted products
Vendor Product Version
Drupal Commerce Stripe Affected: 0.0.0 , < 1.4 (semver)
Affected: 2.0.0 , < 2.2.3 (semver)
Create a notification for this product.
Date Public
2026-10-28 16:56
Show details on NVD website

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CVE-2026-118040 (GCVE-0-2026-118040)

Vulnerability from cvelistv5 – Published: 2026-10-28 12:30 – Updated: 2026-11-06 18:35
VLAI
Title
Improper Signature and Certificate Validation in Telerik Document Processing Libraries RadPdfProcessing
Summary
In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, improper verification of cryptographic signatures and improper certificate validation in RadPdfProcessing digital signature validation allow an unauthenticated attacker to cause signature validation to report forged content as unmodified and its signing certificate as valid via a crafted signed PDF document.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 18:17 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Show details on NVD website

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CVE-2026-117691 (GCVE-0-2026-117691)

Vulnerability from cvelistv5 – Published: 2026-11-05 13:27 – Updated: 2026-11-07 15:39
VLAI
Title
Keycloak-services: keycloak-services: saml redirect binding signature bypass via percent-encoded parameter names
Summary
A flaw was found in the SAML HTTP-Redirect binding implementation of Keycloak. The issue occurs because the server processes percent-encoded parameter names (like %53AMLResponse) while the signature verification logic only checks literal parameter names. An attacker can use this discrepancy to provide a crafted, unsigned SAML message that the server processes instead of a legitimately signed one, leading to full account takeover of federated users.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 16:28 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
redhat CNA
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:96039 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:96040 vendor-advisoryx_refsource_REDHAT
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https://bugzilla.redhat.com/show_bug.cgi?id=2561977 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6.9-1 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-25 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.6 Unaffected: 26.6-26 , < * (rpm)
    cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat build of Keycloak 26.6.9     cpe:/a:redhat:build_keycloak:26.6::el9
Create a notification for this product.
Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
Create a notification for this product.
Date Public
2026-11-05 00:00
Show details on NVD website

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CVE-2026-117602 (GCVE-0-2026-117602)

Vulnerability from cvelistv5 – Published: 2026-10-27 13:09 – Updated: 2026-11-05 16:59
VLAI
Title
Electrum before 4.7.2 External Plugin Authorization Bypass Local Code Execution
Summary
Electrum 4.6.0 before 4.7.2 contains an authorization bypass in the external plugin loader, which executes a plugin's __init__.py module when the plugin is marked enabled in the config file, without verifying its plugin-password signature. A rogue local process with write access to the Electrum data directory can place plugin code in the plugins/ folder and mark it enabled, causing arbitrary code execution inside the Electrum process.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 16:59 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
VulnCheck CNA
Impacted products
Vendor Product Version
spesmilo electrum Affected: 0 , < 4.7.2 (semver)
Unaffected: 4.7.2 (semver)
    cpe:2.3:a:electrum:electrum:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-04-28 00:00
Show details on NVD website

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CVE-2026-117601 (GCVE-0-2026-117601)

Vulnerability from cvelistv5 – Published: 2026-10-27 13:09 – Updated: 2026-10-28 16:16
VLAI
Title
Electrum before 4.8.3 Missing Signature Verification of Mempool Transactions
Summary
Electrum before 4.8.3 fails to verify signatures of wallet-owned inputs in unconfirmed mempool transactions, allowing malicious servers to replace a just-broadcast transaction with a conflicting one. Attackers can swallow the user's transaction and display an invalid zero-fee copy paying an attacker address, tricking users into RBF fee-bumping and signing it.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-28 15:56 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
VulnCheck CNA
Impacted products
Vendor Product Version
spesmilo electrum Affected: 0 , < 4.8.3 (semver)
Unaffected: 4.8.3 (semver)
    cpe:2.3:a:electrum:electrum:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-24 00:00
Credits
Show details on NVD website

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CVE-2026-117549 (GCVE-0-2026-117549)

Vulnerability from cvelistv5 – Published: 2026-11-02 10:26 – Updated: 2026-11-02 16:59
VLAI
Title
@fastify/secure-session vulnerable to signature verification bypass via cookie signature removal
Summary
@fastify/secure-session is a session plugin for Fastify that stores an encrypted session in a cookie. In versions 7.5.0 through 8.4.1, when the plugin is configured with the signed cookie option, it calls the cookie unsign routine but, when the signature check reports the value as invalid, still passes the original cookie value to the session decoder, so a session whose signature did not validate is decrypted anyway. The practical effect appears when an application supplies the cookie signing secret independently of the session encryption key and rotates only the signing secret to retire existing sessions while keeping the encryption key active, because a holder of an old session cookie can strip the now obsolete signature and keep using the session. The attacker must already possess an unexpired encrypted session cookie and needs neither secret, and cannot forge session data, extend expiry, or survive rotation of the encryption key. The issue is fixed in @fastify/secure-session 8.4.2, which no longer decodes the session when the signed cookie option is set and the signature check fails, and users should upgrade to 8.4.2 or later. As a workaround, rotate the session encryption key rather than relying on rotation of the cookie signing secret alone.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-02 16:59 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
openjs CNA
Impacted products
Vendor Product Version
@fastify/secure-session @fastify/secure-session Affected: 7.5.0 , < 8.4.2 (semver)
Unaffected: 8.4.2 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-116790 (GCVE-0-2026-116790)

Vulnerability from cvelistv5 – Published: 2026-11-05 19:40 – Updated: 2026-11-09 18:08
VLAI
Title
FreeSWITCH: Inbound ICE connectivity checks are accepted without verifying STUN MESSAGE-INTEGRITY
Summary
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, FreeSWITCH's inbound ICE handling accepted every connectivity check without cryptographically validating its STUN MESSAGE-INTEGRITY attribute. A network peer able to reach an ICE-enabled leg's media port could forge an ICE connectivity check without SDP credentials, nominate its own address, redirect RTP and DTLS traffic, and terminate the legitimate media path. On unencrypted legs this enables eavesdropping and media injection, while all WebRTC and SIP legs that negotiate ICE are in scope. Version 1.11.2 introduces the remediation, which requires ice_verify_message_integrity=true.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 18:07 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
signalwire freeswitch Affected: < 1.11.2
Create a notification for this product.
Show details on NVD website

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No mitigation information available for this CWE.

CAPEC-463: Padding Oracle Crypto Attack

An adversary is able to efficiently decrypt data without knowing the decryption key if a target system leaks data on whether or not a padding error happened while decrypting the ciphertext. A target system that leaks this type of information becomes the padding oracle and an adversary is able to make use of that oracle to efficiently decrypt data without knowing the decryption key by issuing on average 128*b calls to the padding oracle (where b is the number of bytes in the ciphertext block). In addition to performing decryption, an adversary is also able to produce valid ciphertexts (i.e., perform encryption) by using the padding oracle, all without knowing the encryption key.

CAPEC-475: Signature Spoofing by Improper Validation

An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.