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.

1127 vulnerabilities reference this CWE, most recent first.

CVE-2025-30064 (GCVE-0-2025-30064)

Vulnerability from cvelistv5 – Published: 2025-08-27 10:25 – Updated: 2025-08-27 13:25
VLAI
Title
Possibility to generate a session for any user via the "ex:action" parameter after obtaining access to the JWT key
Summary
An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService function to generate a session for any user.
Severity
8.8 (High)
CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-912 - Hidden Functionality
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
CGM CGM CLININET Affected: 0 , < 2025.MS2 (custom)
Create a notification for this product.
Date Public
2025-08-27 00:00
Credits
Maciej Kazulak
Show details on NVD website
To clipboard 

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CVE-2025-29915 (GCVE-0-2025-29915)

Vulnerability from cvelistv5 – Published: 2025-04-10 19:51 – Updated: 2025-04-10 20:05
VLAI
Title
Suricata af-packet: defrag option can lead to truncated packets affecting visibility
Summary
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. The AF_PACKET defrag option is enabled by default and allows AF_PACKET to re-assemble fragmented packets before reaching Suricata. However the default packet size in Suricata is based on the network interface MTU which leads to Suricata seeing truncated packets. Upgrade to Suricata 7.0.9, which uses better defaults and adds warnings for user configurations that may lead to issues.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
OISF suricata Affected: < 7.0.9
Create a notification for this product.
Show details on NVD website
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CVE-2025-29775 (GCVE-0-2025-29775)

Vulnerability from cvelistv5 – Published: 2025-03-14 17:11 – Updated: 2025-03-15 20:45
VLAI
Title
xml-crypto Vulnerable to XML Signature Verification Bypass via DigestValue Comment
Summary
xml-crypto is an XML digital signature and encryption library for Node.js. An attacker may be able to exploit a vulnerability in versions prior to 6.0.1, 3.2.1, and 2.1.6 to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker to escalate privileges or impersonate another user. Users of versions 6.0.0 and prior should upgrade to version 6.0.1 to receive a fix. Those who are still using v2.x or v3.x should upgrade to patched versions 2.1.6 or 3.2.1, respectively.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
node-saml xml-crypto Affected: >= 4.0.0, < 6.0.1
Affected: >= 3.0.0, < 3.2.1
Affected: < 2.1.6
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-29774 (GCVE-0-2025-29774)

Vulnerability from cvelistv5 – Published: 2025-03-14 17:05 – Updated: 2025-03-15 20:50
VLAI
Title
xml-crypto Vulnerable to XML Signature Verification Bypass via Multiple SignedInfo References
Summary
xml-crypto is an XML digital signature and encryption library for Node.js. An attacker may be able to exploit a vulnerability in versions prior to 6.0.1, 3.2.1, and 2.1.6 to bypass authentication or authorization mechanisms in systems that rely on xml-crypto for verifying signed XML documents. The vulnerability allows an attacker to modify a valid signed XML message in a way that still passes signature verification checks. For example, it could be used to alter critical identity or access control attributes, enabling an attacker with a valid account to escalate privileges or impersonate another user. Users of versions 6.0.0 and prior should upgrade to version 6.0.1 to receive a fix. Those who are still using v2.x or v3.x should upgrade to patched versions 2.1.6 or 3.2.1, respectively.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
node-saml xml-crypto Affected: >= 4.0.0, < 6.0.1
Affected: >= 3.0.0, < 3.2.1
Affected: < 2.1.6
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-27813 (GCVE-0-2025-27813)

Vulnerability from cvelistv5 – Published: 2025-04-10 00:00 – Updated: 2025-04-10 14:49
VLAI
Summary
MSI Center before 2.0.52.0 has Missing PE Signature Validation.
Severity
8.1 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
MSI Center Affected: 0 , < 2.0.52.0 (custom)
Create a notification for this product.
Show details on NVD website
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CVE-2025-27773 (GCVE-0-2025-27773)

Vulnerability from cvelistv5 – Published: 2025-03-11 19:04 – Updated: 2025-05-09 20:03
VLAI
Title
SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding
Summary
The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
simplesamlphp saml2 Affected: < 4.17.0
Affected: >= 5.0.0-alpha.1, < 5.0.0-alpha.20
Create a notification for this product.
Show details on NVD website
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CVE-2025-27498 (GCVE-0-2025-27498)

Vulnerability from cvelistv5 – Published: 2025-03-03 16:52 – Updated: 2025-03-03 17:32
VLAI
Title
AEADs/ascon-aead: Plaintext exposed in decrypt_in_place_detached even on tag verification failure
Summary
aes-gcm is a pure Rust implementation of the AES-GCM. In decrypt_in_place_detached, the decrypted ciphertext (which is the correct ciphertext) is exposed even if the tag is incorrect. This is because in decrypt_inplace in asconcore.rs, tag verification causes an error to be returned with the plaintext contents still in buffer. The vulnerability is fixed in 0.4.3.
Severity
5.6 (Medium)
CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
RustCrypto AEADs Affected: < 0.4.3
Create a notification for this product.
Show details on NVD website
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CVE-2025-25292 (GCVE-0-2025-25292)

Vulnerability from cvelistv5 – Published: 2025-03-12 20:53 – Updated: 2025-11-03 19:45
VLAI
Title
Ruby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)
Summary
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently, the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 contain a patch for the issue.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-436 - Interpretation Conflict
Assigner
References
Impacted products
Vendor Product Version
SAML-Toolkits ruby-saml Affected: < 1.12.4
Affected: >= 1.13.0, < 1.18.0
Create a notification for this product.
Show details on NVD website
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CVE-2025-25291 (GCVE-0-2025-25291)

Vulnerability from cvelistv5 – Published: 2025-03-12 20:16 – Updated: 2025-11-03 19:44
VLAI
Title
ruby-saml vulnerable to SAML authentication bypass due to DOCTYPE handling (parser differential)
Summary
ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack. This issue may lead to authentication bypass. Versions 1.12.4 and 1.18.0 fix the issue.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-436 - Interpretation Conflict
Assigner
References
Impacted products
Vendor Product Version
SAML-Toolkits ruby-saml Affected: < 1.12.4
Affected: >= 1.13.0, < 1.18.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-24800 (GCVE-0-2025-24800)

Vulnerability from cvelistv5 – Published: 2025-01-28 15:41 – Updated: 2025-01-28 16:07
VLAI
Title
Critical vulnerability in `ismp-grandpa` <v15.0.1
Summary
Hyperbridge is a hyper-scalable coprocessor for verifiable, cross-chain interoperability. A critical vulnerability was discovered in the ismp-grandpa crate, that allowed a malicious prover easily convince the verifier of the finality of arbitrary headers. This could be used to steal funds or compromise other kinds of cross-chain applications. This vulnerability is fixed in 15.0.1.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-670 - Always-Incorrect Control Flow Implementation
  • CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
Impacted products
Vendor Product Version
polytope-labs hyperbridge Affected: < 15.0.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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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.

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