Common Weakness Enumeration

CWE-347

Allowed

Improper Verification of Cryptographic Signature

Abstraction: Base · Status: Draft

API response cwe.mitre.org

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

1476 vulnerabilities reference this CWE, most recent first.

CVE-2026-110765 (GCVE-0-2026-110765)

Vulnerability from cvelistv5 – Published: 2026-10-14 18:47 – Updated: 2026-10-14 18:47
VLAI
Title
FlexPrice through 2.1.38 QuickBooks Webhook Signature Verification Bypass
Summary
FlexPrice through 2.1.38 contains an authentication bypass vulnerability in HandleQuickBooksWebhook that skips signature verification when the intuit-signature header is omitted. Unauthenticated attackers knowing a tenant and environment ID can replay forged payment notifications to repeatedly add payment amounts, marking invoices paid or overpaid.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
References
Impacted products
Vendor Product Version
flexprice flexprice Affected: 0 , ≤ 2.1.38 (semver)
Create a notification for this product.
Date Public
2026-10-14 00:00
Credits
hieuPenguinnn
Show details on NVD website
To clipboard 

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CVE-2026-109838 (GCVE-0-2026-109838)

Vulnerability from cvelistv5 – Published: 2026-10-16 17:44 – Updated: 2026-10-16 19:11
VLAI
Title
IBM Db2 Genius Hub Improper verification of cryptographic signature
Summary
IBM Db2 Genius Hub 1.0 could allow a local attacker to obtain sensitive information due to improper verification of cryptographic signature.
Severity
5.1 (Medium)
CVSS:3.1/AV:L/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 2026-10-16 19:11 UTC
CWE
  • CWE-347 - Improper verification of cryptographic signature
Assigner
ibm CNA under the mitre root
CNA scorecard B 88/100 over 1251 records in the last 180 days details
References
URL Tags
https://www.ibm.com/support/pages/node/7292486 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM Db2 Genius Hub Affected: 1.0
    cpe:2.3:a:ibm:db2_genius_hub:1.0:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-108971 (GCVE-0-2026-108971)

Vulnerability from cvelistv5 – Published: 2026-10-13 05:45 – Updated: 2026-10-14 13:37
VLAI
Title
D-Link DCS-930L Emergency HTTP Recovery Server bootloader_region.bin mpfd_decode signature verification
Summary
A flaw has been found in D-Link DCS-930L B1.08B4. This impacts the function mpfd_decode of the file bootloader_region.bin of the component Emergency HTTP Recovery Server. Executing a manipulation of the argument firmware can lead to improper verification of cryptographic signature. The attack may be performed from remote. The exploit has been published and may be used.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
9.6 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 13:36 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-345 - Insufficient Verification of Data Authenticity
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3864 records in the last 180 days details
References
Impacted products
Vendor Product Version
D-Link DCS-930L Affected: B1.08B4
    cpe:2.3:h:d-link:dcs-930l:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
sleep (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-108699 (GCVE-0-2026-108699)

Vulnerability from cvelistv5 – Published: 2026-10-11 13:25 – Updated: 2026-10-13 19:35
VLAI
Title
hyper-mcp through 0.8.3 Improper Signature Verification of OCI WebAssembly Plugins
Summary
hyper-mcp through 0.8.3 contains an improper signature verification vulnerability that allows attackers to load malicious WebAssembly plugins because cosign_verify_args() accepts any signer identity and OIDC issuer by default. Attackers controlling a plugin image reference can sign a malicious image with a free Sigstore keyless certificate to execute plugins with configured host, filesystem, and environment capabilities.
Severity
8.3 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 19:35 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
References
Impacted products
Vendor Product Version
hyper-mcp-rs hyper-mcp Affected: 0 , ≤ 0.8.3 (semver)
Create a notification for this product.
Date Public
2026-10-11 00:00
Credits
hieuPenguinnn
Show details on NVD website
To clipboard 

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CVE-2026-107724 (GCVE-0-2026-107724)

Vulnerability from cvelistv5 – Published: 2026-10-08 21:53 – Updated: 2026-10-09 15:51
VLAI
Title
fast-jwt treats raw public JWK JSON as an HMAC secret, enabling HS256 token forgery
Summary
fast-jwt provides fast JSON Web Token (JWT) implementation. In 6.2.4, fast-jwt can classify raw serialized public JWK or JWKS JSON as an HMAC secret because src/crypto.js performDetectPublicKeyAlgorithms treats non-PEM strings as symmetric key material. If HS256 is explicitly allowed or inferred, an attacker who knows the exact serialized public-key bytes can use those bytes as an HMAC key and create a token containing arbitrary claims that createVerifier accepts. Serialization ordering or whitespace differences can prevent exploitation, and applications using supported PEM keys with an asymmetric-only algorithm allowlist are not affected. This issue is fixed in version 6.3.0.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 15:51 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
nearform fast-jwt Affected: >= 6.2.4, < 6.3.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-107722 (GCVE-0-2026-107722)

Vulnerability from cvelistv5 – Published: 2026-10-08 21:49 – Updated: 2026-10-13 16:26
VLAI
Title
fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion
Summary
fast-jwt provides fast JSON Web Token (JWT) implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatcher remains start-anchored, so comments, control characters, zero-width characters, or wrapper text can prevent PEM detection and reach the HMAC fallback. An attacker who knows the public key bytes can sign arbitrary HS256 claims with that public material when HS256 is inferred or allowed, resulting in authentication or authorization bypass. An asymmetric-only algorithm allowlist prevents the attack. This issue is fixed in version 6.3.0.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 16:26 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
nearform fast-jwt Affected: >= 6.2.0, < 6.3.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-107720 (GCVE-0-2026-107720)

Vulnerability from cvelistv5 – Published: 2026-10-08 21:44 – Updated: 2026-10-09 14:32
VLAI
Title
fast-jwt: createVerifier accepts unsigned JWTs when key is '' or null and algorithms is explicitly set
Summary
fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.3.1, fast-jwt createVerifier accepts an unsigned JWT when key is an empty string or null and algorithms is a non-empty allowlist. Falsy synchronous keys bypass prepareKeyOrSecret, allowedAlgorithms remains active, hasKey is false, and the empty signature avoids the verifySignature gate. An attacker can therefore submit a token containing arbitrary claims without possessing a signing key, resulting in authentication or authorization bypass. Claim validators still run, and non-empty keys, an empty key without algorithms, and the async key resolver path do not have this behavior. This issue is fixed in version 6.3.1.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 14:31 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version
nearform fast-jwt Affected: < 6.3.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-106581 (GCVE-0-2026-106581)

Vulnerability from cvelistv5 – Published: 2026-10-09 13:40 – Updated: 2026-10-09 16:46
VLAI
Title
Docker Desktop for Windows installer failed to verify external packages
Summary
Before 4.92.0, Docker Desktop for Windows did not verify the signature of a package supplied to Docker Desktop Installer.exe install -package. An attacker able to provide a crafted package and convince a user to approve the Docker-signed UAC prompt could execute attacker-controlled installer actions as LocalSystem.
Severity
8.2 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 16:16 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
Docker CNA under the mitre root
CNA scorecard B 88/100 over 33 records in the last 180 days details
References
Impacted products
Vendor Product Version
Docker Docker Desktop Affected: 0 , < 4.92.0 (semver)
    cpe:2.3:a:docker:desktop:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Trung Nguyen (@everping) of CyStack
Show details on NVD website
To clipboard 

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CVE-2026-105161 (GCVE-0-2026-105161)

Vulnerability from cvelistv5 – Published: 2026-10-04 16:30 – Updated: 2026-10-06 22:02 Unsupported When Assigned
VLAI
Title
invariant-systems-ai aiir Policy Gate signature verification
Summary
A flaw has been found in invariant-systems-ai aiir up to 1.7.0. The affected element is an unknown function of the component Policy Gate Handler. Executing a manipulation can lead to improper verification of cryptographic signature. The attack can be executed remotely. It is advisable to upgrade the affected component. The GitHub repository of this project is not available anymore. This vulnerability only affects products that are no longer supported by the maintainer.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C
5.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:X/RL:O/RC:C
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 22:02 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-345 - Insufficient Verification of Data Authenticity
Assigner
VulDB CNA under the mitre root
CNA scorecard B 82/100 over 3864 records in the last 180 days details
References
Impacted products
Vendor Product Version
invariant-systems-ai aiir Affected: 1.0
Affected: 1.1
Affected: 1.2
Affected: 1.3
Affected: 1.4
Affected: 1.5
Affected: 1.6
Affected: 1.7.0
    cpe:2.3:a:invariant-systems-ai:aiir:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-105118 (GCVE-0-2026-105118)

Vulnerability from cvelistv5 – Published: 2026-10-03 12:14 – Updated: 2026-10-05 14:45
VLAI
Title
OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession
Summary
OpenAM before 16.1.3 contains an open redirect vulnerability that allows unauthenticated attackers to redirect users by supplying an unverified id_token_hint to the /oauth2/connect/endSession endpoint. Attackers can name any realm client in a forged hint to redirect victims to any registered post-logout URI, enabling phishing that borrows the OpenAM host's trust.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
4.7 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 14:45 UTC
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
References
Impacted products
Vendor Product Version
OpenIdentityPlatform OpenAM Affected: 0 , < 16.1.3 (semver)
Unaffected: 16.1.3 (semver)
    cpe:2.3:a:openidentityplatform:openam:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-18 00:00
Credits
rockmelodies santhreal maximthomas tsujiguchitky
Show details on NVD website
To clipboard 

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        },
        {
          "name": "VulnCheck Advisory: OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/openam-before-16.1.3-open-redirect-via-unverified-id-token-hint-in-endsession"
        }
      ],
      "title": "OpenAM before 16.1.3 Open Redirect via Unverified id_token_hint in endSession",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-105118",
    "datePublished": "2026-10-03T12:14:43.044Z",
    "dateReserved": "2026-10-03T12:04:36.964Z",
    "dateUpdated": "2026-10-05T14:45:14.338Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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