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CWE-347
Improper Verification of Cryptographic Signature
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
CVE-2026-23965 (GCVE-0-2026-23965)
Vulnerability from cvelistv5 – Published: 2026-01-22 02:05 – Updated: 2026-01-22 15:58
VLAI
Title
sm-crypto Affected by Signature Forgery in SM2-DSA
Summary
sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A signature forgery vulnerability exists in the SM2 signature verification logic of sm-crypto prior to version 0.4.0. Under default configurations, an attacker can forge valid signatures for arbitrary public keys. If the message space contains sufficient redundancy, the attacker can fix the prefix of the message associated with the forged signature to satisfy specific formatting requirements. Version 0.4.0 patches the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/JuneAndGreen/sm-crypto/securit… | x_refsource_CONFIRM |
| https://github.com/JuneAndGreen/sm-crypto/commit/… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| JuneAndGreen | sm-crypto |
Affected:
< 0.4.0
|
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CVE-2026-23967 (GCVE-0-2026-23967)
Vulnerability from cvelistv5 – Published: 2026-01-22 01:59 – Updated: 2026-01-22 16:03
VLAI
Title
sm-crypto Affected by Signature Malleability in SM2-DSA
Summary
sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A signature malleability vulnerability exists in the SM2 signature verification logic of the sm-crypto library prior to version 0.3.14. An attacker can derive a new valid signature for a previously signed message from an existing signature. Version 0.3.14 patches the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/JuneAndGreen/sm-crypto/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| JuneAndGreen | sm-crypto |
Affected:
< 0.3.14
|
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CVE-2026-23992 (GCVE-0-2026-23992)
Vulnerability from cvelistv5 – Published: 2026-01-22 02:20 – Updated: 2026-01-22 15:21
VLAI
Title
go-tuf improperly validates the configured threshold for delegations
Summary
go-tuf is a Go implementation of The Update Framework (TUF). Starting in version 2.0.0 and prior to version 2.3.1, a compromised or misconfigured TUF repository can have the configured value of signature thresholds set to 0, which effectively disables signature verification. This can lead to unauthorized modification to TUF metadata files is possible at rest, or during transit as no integrity checks are made. Version 2.3.1 fixes the issue. As a workaround, always make sure that the TUF metadata roles are configured with a threshold of at least 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
2 references
| URL | Tags |
|---|---|
| https://github.com/theupdateframework/go-tuf/secu… | x_refsource_CONFIRM |
| https://github.com/theupdateframework/go-tuf/comm… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| theupdateframework | go-tuf |
Affected:
>= 2.0.0, < 2.3.1
|
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CVE-2026-24032 (GCVE-0-2026-24032)
Vulnerability from cvelistv5 – Published: 2026-04-14 08:40 – Updated: 2026-04-14 13:18
VLAI
Summary
A vulnerability has been identified in SINEC NMS (All versions < V4.0 SP3 with UMC). The affected application contains an authentication weakness due to insufficient validation of user identity in the UMC component.
This could allow an unauthenticated remote attacker to bypass authentication and gain unauthorized access to the application. (ZDI-CAN-27564)
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
Impacted products
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CVE-2026-24807 (GCVE-0-2026-24807)
Vulnerability from cvelistv5 – Published: 2026-01-27 08:43 – Updated: 2026-05-06 16:58
VLAI
Title
Buffer Overflow Vulnerability in liuyueyi/quick-media
Summary
Improper Verification of Cryptographic Signature vulnerability in liuyueyi quick-media (plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util modules). This vulnerability is associated with program files SeekableOutputStream.Java.
This issue affects quick-media: before v1.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| liuyueyi | quick-media |
Affected:
0 , < v1.0
(git)
|
Credits
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CVE-2026-24850 (GCVE-0-2026-24850)
Vulnerability from cvelistv5 – Published: 2026-01-28 00:24 – Updated: 2026-01-28 14:54
VLAI
Title
ML-DSA Signature Verification Accepts Signatures with Repeated Hint Indices
Summary
The ML-DSA crate is a Rust implementation of the Module-Lattice-Based Digital Signature Standard (ML-DSA). Starting in version 0.0.4 and prior to version 0.1.0-rc.4, the ML-DSA signature verification implementation in the RustCrypto `ml-dsa` crate incorrectly accepts signatures with repeated (duplicate) hint indices. According to the ML-DSA specification (FIPS 204 / RFC 9881), hint indices within each polynomial must be **strictly increasing**. The current implementation uses a non-strict monotonic check (`<=` instead of `<`), allowing duplicate indices. This is a regression bug. The original implementation was correct, but a commit in version 0.0.4 inadvertently changed the strict `<` comparison to `<=`, introducing the vulnerability. Version 0.1.0-rc.4 fixes the issue.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://github.com/RustCrypto/signatures/security… | x_refsource_CONFIRM |
| https://github.com/RustCrypto/signatures/issues/894 | x_refsource_MISC |
| https://github.com/RustCrypto/signatures/pull/895 | x_refsource_MISC |
| https://github.com/RustCrypto/signatures/commit/4… | x_refsource_MISC |
| https://github.com/RustCrypto/signatures/commit/b… | x_refsource_MISC |
| https://csrc.nist.gov/pubs/fips/204/final | x_refsource_MISC |
| https://datatracker.ietf.org/doc/html/rfc9881 | x_refsource_MISC |
| https://github.com/C2SP/wycheproof | x_refsource_MISC |
| https://github.com/C2SP/wycheproof/blob/master/te… | x_refsource_MISC |
| https://github.com/C2SP/wycheproof/blob/master/te… | x_refsource_MISC |
| https://github.com/C2SP/wycheproof/blob/master/te… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RustCrypto | signatures |
Affected:
>= 0.0.4, < 0.1.0-rc.4
|
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CVE-2026-25793 (GCVE-0-2026-25793)
Vulnerability from cvelistv5 – Published: 2026-02-06 22:55 – Updated: 2026-02-09 15:25
VLAI
Title
Nebula Has Possible Blocklist Bypass via ECDSA Signature Malleability
Summary
Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates (which is not the default configuration), it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of the certificate with a different fingerprint. This issue has been patched in version 1.10.3.
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
| URL | Tags |
|---|---|
| https://github.com/slackhq/nebula/security/adviso… | x_refsource_CONFIRM |
| https://github.com/slackhq/nebula/commit/f573e8a2… | x_refsource_MISC |
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CVE-2026-25922 (GCVE-0-2026-25922)
Vulnerability from cvelistv5 – Published: 2026-02-12 19:38 – Updated: 2026-02-17 16:19
VLAI
Title
authentik has a Signature Verification Bypass via SAML Assertion Wrapping
Summary
authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/goauthentik/authentik/security… | x_refsource_CONFIRM |
| https://github.com/goauthentik/authentik/releases… | x_refsource_MISC |
| https://github.com/goauthentik/authentik/releases… | x_refsource_MISC |
| https://github.com/goauthentik/authentik/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| goauthentik | authentik |
Affected:
< 2025.8.6
Affected: >= 2025.10.0-rc1, < 2025.10.4 Affected: >= 2025.10.0-rc1, < 2025.12.4 |
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CVE-2026-2625 (GCVE-0-2026-2625)
Vulnerability from cvelistv5 – Published: 2026-04-03 18:38 – Updated: 2026-07-02 17:13
VLAI
Title
Rust-rpm-sequoia: rust-rpm-sequoia: denial of service via crafted rpm file during signature verification
Summary
A flaw was found in rust-rpm-sequoia. An attacker can exploit this vulnerability by providing a specially crafted Red Hat Package Manager (RPM) file. During the RPM signature verification process, this crafted file can trigger an error in the OpenPGP signature parsing code, leading to an unconditional termination of the rpm process. This issue results in an application level denial of service, making the system unable to process RPM files for signature verification.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:12682 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-2625 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2440357 | issue-trackingx_refsource_REDHAT |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Hardened Images |
Unaffected:
1.10.1.1-1.2.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
Date Public
2026-02-17 12:34
Credits
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CVE-2026-27445 (GCVE-0-2026-27445)
Vulnerability from cvelistv5 – Published: 2026-03-04 08:47 – Updated: 2026-03-04 19:26
VLAI
Title
PGP Signature Reflection
Summary
SEPPmail Secure Email Gateway before version 15.0.1 does not properly verify that a PGP signature was generated by the expected key, allowing signature spoofing.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://downloads.seppmail.com/extrelnotes/150/ER… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail | Secure Email Gateway |
Affected:
0 , < 15.0.1
(custom)
|
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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.