Common Weakness Enumeration
CWE-347
AllowedImproper Verification of Cryptographic Signature
Abstraction: Base · Status: Draft
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
1120 vulnerabilities reference this CWE, most recent first.
CVE-2026-58426 (GCVE-0-2026-58426)
Vulnerability from cvelistv5 – Published: 2026-07-03 20:54 – Updated: 2026-07-06 15:07
VLAI
EPSS
VEX
Title
Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write
Summary
Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write
Severity
9.6 (Critical)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/go-gitea/gitea/security/adviso… | vendor-advisory |
| https://github.com/go-gitea/gitea/pull/37707 | patch |
| https://github.com/go-gitea/gitea/releases/tag/v1.26.2 | release-notes |
| https://blog.gitea.com/release-of-1.26.2/ | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Gitea | Gitea Open Source Git Server |
Affected:
1.22.0 , ≤ 1.26.1
(semver)
|
Credits
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CVE-2026-56451 (GCVE-0-2026-56451)
Vulnerability from cvelistv5 – Published: 2026-07-14 09:19 – Updated: 2026-07-14 14:30
VLAI
EPSS
VEX
Summary
A vulnerability has been identified in Opcenter X (All versions < V2604). Affected applications do not properly validate the algorithm specified in the JSON Web Token (JWT) header.
This could allow an unauthenticated remote attacker to forge arbitrary JWT, bypass authentication mechanisms and impersonate any user including administrative accounts, potentially gaining full unauthorized access to the application.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Siemens | Opcenter X |
Affected:
0 , < V2604
(custom)
|
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CVE-2026-55961 (GCVE-0-2026-55961)
Vulnerability from cvelistv5 – Published: 2026-06-25 16:51 – Updated: 2026-06-25 17:57
VLAI
EPSS
VEX
Title
wolfSSL_PKCS7_verify() reports success for degenerate (certs-only) PKCS#7 with no signer
Summary
wolfSSL_PKCS7_verify() returning success for a degenerate (certs-only) PKCS#7 object that contains no signer. Such an object has empty signerInfos, so the underlying signed-data verification succeeds without authenticating any content. The compatibility-layer verify path now rejects the object when no signer signature has actually been verified, so a PKCS#7 carrying no valid signature is no longer reported as verified. This is enforced regardless of the PKCS7_NOVERIFY flag, which only suppresses signer certificate chain validation and was never intended to waive the requirement that a signature exist. Only affects OpenSSL compatibility builds that call the PKCS7_verify() compatibility API on potentially degenerate PKCS#7 bundles.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
Impacted products
Credits
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CVE-2026-54783 (GCVE-0-2026-54783)
Vulnerability from cvelistv5 – Published: 2026-07-08 22:16 – Updated: 2026-07-10 03:55
VLAI
EPSS
VEX
Title
CoreWCF: XML Signature Wrapping in WS-Security endorsing/supporting signature verification allows replay of captured signed messages
Summary
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF WS-Security endorsing and supporting signature verification does not ensure the selected ds:Signature covers the expected Security header target, allowing an attacker with one captured signed SOAP envelope to replay arbitrary service operations as the victim principal. This issue is fixed in versions 1.8.1 and 1.9.1.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/CoreWCF/CoreWCF/security/advis… | x_refsource_CONFIRM |
| https://github.com/CoreWCF/CoreWCF/commit/0589692… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/30aef80… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/4618f24… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1 | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1 | x_refsource_MISC |
Impacted products
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CVE-2026-54782 (GCVE-0-2026-54782)
Vulnerability from cvelistv5 – Published: 2026-07-08 22:20 – Updated: 2026-07-10 03:55
VLAI
EPSS
VEX
Title
CoreWCF: Authentication bypass in CoreWCF SAML 1.1 / 2.0 token signature validation
Summary
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML 1.1 and SAML 2.0 token validation does not correctly resolve the issuer signing key or require signed tokens when IdentityConfiguration is used with federated bindings, allowing an unauthenticated remote attacker to impersonate any principal the trusted STS could issue. This issue is fixed in versions 1.8.1 and 1.9.1.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/CoreWCF/CoreWCF/security/advis… | x_refsource_CONFIRM |
| https://github.com/CoreWCF/CoreWCF/commit/0b8c8af… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/0e63c2c… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/e5cc9b6… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1 | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1 | x_refsource_MISC |
Impacted products
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CVE-2026-54774 (GCVE-0-2026-54774)
Vulnerability from cvelistv5 – Published: 2026-07-08 22:17 – Updated: 2026-07-10 03:55
VLAI
EPSS
VEX
Title
CoreWCF: SamlSerializer skips SignatureValue verification when SAML signing token is not an X.509 certificate
Summary
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, SamlSerializer skips final SignatureValue verification when a CoreWCF service validates SAML tokens using a non-X.509 signing token, allowing an attacker to reference a non-X.509 SecurityToken key identifier and bypass assertion signature verification. This issue is fixed in versions 1.8.1 and 1.9.1.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/CoreWCF/CoreWCF/security/advis… | x_refsource_CONFIRM |
| https://github.com/CoreWCF/CoreWCF/commit/65d0902… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/b914495… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/e745413… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1 | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1 | x_refsource_MISC |
Impacted products
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CVE-2026-54773 (GCVE-0-2026-54773)
Vulnerability from cvelistv5 – Published: 2026-07-08 22:09 – Updated: 2026-07-10 14:05
VLAI
EPSS
VEX
Title
CoreWCF: WS-Security signature substitution via document-wide Signature lookup
Summary
CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF WS-Security signature verification performs a document-wide ds:Signature lookup, allowing an unauthenticated remote attacker to place a SOAP header before wsse:Security and cause WSSecurityOneDotZeroReceiveSecurityHeader to verify an attacker-supplied signature instead of the security header signature. This issue is fixed in versions 1.8.1 and 1.9.1.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/CoreWCF/CoreWCF/security/advis… | x_refsource_CONFIRM |
| https://github.com/CoreWCF/CoreWCF/commit/0589692… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/30aef80… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/commit/4618f24… | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1 | x_refsource_MISC |
| https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1 | x_refsource_MISC |
Impacted products
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CVE-2026-54736 (GCVE-0-2026-54736)
Vulnerability from cvelistv5 – Published: 2026-07-10 21:02 – Updated: 2026-07-13 18:01
VLAI
EPSS
VEX
Title
Phalcon: Non-constant-time HMAC verification in `Encryption\Crypt::decrypt` (timing side-channel)
Summary
Phalcon is a high-performance, full-stack PHP framework. Prior to 5.14.1, Phalcon\Encryption\Crypt::decrypt compares the attacker-supplied HMAC tag against the freshly computed HMAC using PHP/Zephir identity comparison, which lowers to a byte-wise comparison that returns early on the first differing byte. This observable timing discrepancy can allow an attacker to recover a valid tag byte-by-byte and attach it to a chosen IV and ciphertext so that decrypt() accepts tampered encrypted content as authentic. This issue is fixed in version 5.14.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/phalcon/cphalcon/security/advi… | x_refsource_CONFIRM |
| https://github.com/phalcon/cphalcon/issues/17090 | x_refsource_MISC |
| https://github.com/phalcon/cphalcon/pull/17091 | x_refsource_MISC |
| https://github.com/phalcon/cphalcon/commit/ad53ab… | x_refsource_MISC |
| https://github.com/phalcon/cphalcon/releases/tag/… | x_refsource_MISC |
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CVE-2026-52754 (GCVE-0-2026-52754)
Vulnerability from cvelistv5 – Published: 2026-06-10 12:40 – Updated: 2026-07-14 21:33 X_Open Source
VLAI
EPSS
VEX
Title
Ghidra < 12.1 - Authentication Bypass via Null Signature in PKIAuthenticationModule
Summary
Ghidra before 12.1 contains an authentication bypass vulnerability in PKIAuthenticationModule.authenticate() that allows any user with a valid CA-signed certificate to impersonate other users by presenting their public certificate with a null signature. Attackers can escalate privileges, modify repository access controls, exfiltrate shared reverse engineering databases, and permanently compromise server integrity.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/NationalSecurityAgency/ghidra/… | vendor-advisory |
| https://github.com/NationalSecurityAgency/ghidra/… | patch |
| https://github.com/NationalSecurityAgency/ghidra/… | patch |
| https://www.vulncheck.com/advisories/ghidra-authe… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nationalsecurityagency | ghidra |
Affected:
0 , < 12.1
(custom)
Unaffected: 12.1 (custom) |
Date Public
2026-05-14 00:00
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CVE-2026-50722 (GCVE-0-2026-50722)
Vulnerability from cvelistv5 – Published: 2026-07-02 21:34 – Updated: 2026-07-07 17:02
VLAI
EPSS
VEX
Title
IKEv2 Denial of Service via RSA-SHA1 (PKCS#1 RSASSA-PKCS1-v1_5) authentication payload
Summary
Libreswan, via the function RSA_authenticate_hash_signature_pkcs1_1_5_rsa(), did not correctly verify the DER encoding of the ASN.1 digest when the IKEv2 AUTH payload was encoded using RSASSA-PKCS1-v1_5 (RFC 8017). A remote attacker can use a variation on the Bleichenbacher attack to forge the AUTH payload when small public exponents are used (e.g., e=3), leading to impersonation. Additionally, a remote attacker, by encoding a shorter than expected hash in the AUTH payload, could trigger an assertion leading to denial-of-service. The daemon aborts and restarts; continued exploitation causes sustained denial of service. Remote code execution is not possible. X.509 certificate verifications of the remote IKE peer are not affected.
Severity
7.5 (High)
8.1 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://libreswan.org/security/CVE-2026-50722/CVE… | vendor-advisory |
| https://libreswan.org/security/CVE-2026-50722/ | patch |
| https://libreswan.org/security/CVE-2026-50721/CVE… | related |
| https://www.rfc-editor.org/rfc/rfc8017 | technical-description |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Libreswan Project | libreswan |
Affected:
0 , ≤ 5.3
(semver)
Unaffected: 5.3.1 (semver) |
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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.