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-2026-47304 (GCVE-0-2026-47304)
Vulnerability from cvelistv5 – Published: 2026-07-14 18:45 – Updated: 2026-07-15 18:32
VLAI
EPSS
VEX
Title
.NET Security Feature Bypass Vulnerability
Summary
Improper verification of cryptographic signature in .NET allows an unauthorized attacker to bypass a security feature over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Visual Studio 2022 version 17.12 |
Affected:
17.12.0 , < 17.12.22
(custom)
|
|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 |
Affected:
17.14.0 , < 17.14.36
(custom)
|
|
| Microsoft | Microsoft Visual Studio 2026 version 18.7 |
Affected:
18.0 , < 18.7.4
(custom)
|
Date Public
2026-07-14 14:00
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CVE-2026-47212 (GCVE-0-2026-47212)
Vulnerability from cvelistv5 – Published: 2026-07-14 19:00 – Updated: 2026-07-15 14:04
VLAI
EPSS
VEX
Title
Symfony: Twilio Notifier Webhook Parser Never Verifies the X-Twilio-Signature HMAC: Unauthenticated Webhook Event Injection
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 6.4.40, 7.4.12, and 8.0.12, TwilioRequestParser::doParse() received the configured webhook secret but ignored the X-Twilio-Signature HMAC header, allowing unauthenticated POST requests to inject forged Twilio status payloads. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/symfony/symfony/security/advis… | x_refsource_CONFIRM |
| https://github.com/symfony/symfony/commit/8545fb2… | x_refsource_MISC |
| https://github.com/symfony/symfony/releases/tag/v6.4.40 | x_refsource_MISC |
| https://github.com/symfony/symfony/releases/tag/v7.4.12 | x_refsource_MISC |
| https://github.com/symfony/symfony/releases/tag/v8.0.12 | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| symfony | symfony |
Affected:
>= 6.4.0, < 6.4.40
Affected: >= 7.0.0-BETA1, < 7.4.12 Affected: >= 8.0.0-BETA1, < 8.0.12 |
|
| symfony | twilio-notifier |
Affected:
>= 6.4.0, < 6.4.40
Affected: >= 7.0.0-BETA1, < 7.4.12 Affected: >= 8.0.0-BETA1, < 8.0.12 |
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CVE-2026-46423 (GCVE-0-2026-46423)
Vulnerability from cvelistv5 – Published: 2026-06-24 20:58 – Updated: 2026-06-26 03:55
VLAI
EPSS
VEX
Title
Rocket.Chat: SAML signature validation skipped when IdP certificate field is empty
Summary
Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's SAML service provider implementation silently skips both SAML Response and Assertion signature validation when the configured IdP certificate field is empty. The verifySignatures routine performs an early return when serviceProviderOptions.cert is falsy, which is the default state of the setting. Because provider registration only gates on the SAML "enabled" toggle and not on the presence of a certificate, an administrator who enables SAML without pasting an IdP certificate obtains a fully wired, publicly reachable SAML login endpoint that accepts unsigned or attacker-supplied assertions. This is a default-configuration authentication-bypass class: the fail-open branch is reached with no misconfiguration beyond leaving a field at its shipped default. This vulnerability is fixed in 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11.
Severity
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
| URL | Tags |
|---|---|
| https://github.com/RocketChat/Rocket.Chat/securit… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RocketChat | Rocket.Chat |
Affected:
>= 8.5.0-rc.0, < 8.5.0
Affected: >= 8.4.0-rc.0, < 8.4.1 Affected: >= 8.3.0-rc.0, < 8.3.3 Affected: >= 8.2.0-rc.0, < 8.2.3 Affected: >= 8.1.0-rc.0, < 8.1.4 Affected: >= 8.0.0-rc.0, < 8.0.5 Affected: >= 7.11.0-rc.0, < 7.13.7 Affected: < 7.10.11 |
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CVE-2026-46354 (GCVE-0-2026-46354)
Vulnerability from cvelistv5 – Published: 2026-07-07 21:10 – Updated: 2026-07-08 13:01
VLAI
EPSS
VEX
Title
Coder: PKCS#7 signature bypass in Azure instance identity allows unauthenticated agent token theft
Summary
Coder allows organizations to provision remote development environments via Terraform. In versions prior tp 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3, `azureidentity.Validate()` verifies that the PKCS#7 signer certificate chains to a trusted Azure CA but never verifies the PKCS#7 signature itself. An attacker can embed a legitimate Azure certificate alongside arbitrary content e.g. `{"vmId":"<target>"}` and the forged `vmId` will be accepted returning the victim workspace agent's session token. No authentication is required. The attacker only needs to know a target VM's `vmId` which is a `UUIDv4`. That's a practical limitation which would typically require prior access to be exploited. Versions 2.24.5, 2.29.13, 2.30.8, 2.31.12, 2.32.2, and 2.33.3 patch the issue. As a workaround, reconfigure any Azure templates to use token authentication rather than `azure-instance-identity`.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/coder/coder/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/coder/coder/pull/25286 | x_refsource_MISC |
| https://github.com/coder/coder/releases/tag/v2.24.5 | x_refsource_MISC |
| https://github.com/coder/coder/releases/tag/v2.29.13 | x_refsource_MISC |
| https://github.com/coder/coder/releases/tag/v2.30.8 | x_refsource_MISC |
| https://github.com/coder/coder/releases/tag/v2.31.12 | x_refsource_MISC |
| https://github.com/coder/coder/releases/tag/v2.32.2 | x_refsource_MISC |
| https://github.com/coder/coder/releases/tag/v2.33.3 | x_refsource_MISC |
Impacted products
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CVE-2026-46349 (GCVE-0-2026-46349)
Vulnerability from cvelistv5 – Published: 2026-06-24 19:40 – Updated: 2026-06-25 13:16
VLAI
EPSS
VEX
Title
Mastodon: LD-Signature Bypass via JSON-LD Named-Graph Restructuring
Summary
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, Mastodon's normalization of incoming activities signed with Linked-Data Signatures does not sufficiently protect the activities from a certain class of spoofing, allowing attackers to re-arrange a valid signed JSON-LD activity from a third-party actor to have it processed differently. This vulnerability is fixed in 4.5.10, 4.4.17, and 4.3.23.
Severity
5.3 (Medium)
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/mastodon/mastodon/security/adv… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-45755 (GCVE-0-2026-45755)
Vulnerability from cvelistv5 – Published: 2026-07-14 18:56 – Updated: 2026-07-14 19:46
VLAI
EPSS
VEX
Title
Symfony: Mailtrap Mailer Webhook Parser Never Verifies the X-Mt-Signature HMAC — Unauthenticated Webhook Event Injection
Summary
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 7.4.12 and 8.0.12, MailtrapRequestParser::doParse() received the configured webhook secret but ignored the X-Mt-Signature HMAC header, allowing unauthenticated POST requests to inject forged Mailtrap delivery, bounce, open, click, or spam events. This issue is fixed in versions 7.4.12 and 8.0.12.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/symfony/symfony/security/advis… | x_refsource_CONFIRM |
| https://github.com/symfony/symfony/commit/4e0467e… | x_refsource_MISC |
| https://github.com/symfony/symfony/releases/tag/v7.4.12 | x_refsource_MISC |
| https://github.com/symfony/symfony/releases/tag/v8.0.12 | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| symfony | symfony |
Affected:
>= 7.2.0, < 7.4.12
Affected: >= 8.0.0-BETA1, < 8.0.12 |
|
| /mailtrap-mailer | mailtrap-mailer |
Affected:
>= 7.2.0, < 7.4.12
Affected: >= 8.0.0-BETA1, < 8.0.12 |
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CVE-2026-45614 (GCVE-0-2026-45614)
Vulnerability from cvelistv5 – Published: 2026-06-03 17:53 – Updated: 2026-06-03 19:29
VLAI
EPSS
VEX
Title
OP-TEE vulnerable to ECDH private key recovery
Summary
OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Prior to version 4.11.0, on many of the ECDH shared secret paths, the public key isn't verified to be a point on the correct curve. By passing approximately 30-40 crafted public keys to OP-TEE, the private key can be reconstructed by a normal world attacker. When calling TEE_DeriveKey the public key is provided with full X and Y values, but the (X, Y) point might not satisfy the `Y^2 == X^3 + aX + b mod P` math for the specific curve that is used. When those public keys aren't rejected, the attacker can select public keys such that each DeriveKey call will leak `d % r` where `d` is the private key and `r` comes from the relationship between the correct curve and the attacker selected curve. With enough leaked data the Chinese remainder theorem can be used to recover the full private key. Version 4.11.0 fixes the issue.
Severity
4.7 (Medium)
SSVC
Exploitation: poc
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://github.com/OP-TEE/optee_os/security/advis… | x_refsource_CONFIRM |
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CVE-2026-45575 (GCVE-0-2026-45575)
Vulnerability from cvelistv5 – Published: 2026-05-26 21:01 – Updated: 2026-05-28 14:11
VLAI
EPSS
VEX
Title
epa4all-client: Improper Verification of Cryptographic Signature
Summary
epa4all-client is the Java Client for epa4all / ePA 3.0 in the Telematik Infrastruktur. Prior to 1.2.2, an attacker who can MITM the TLS connection between the client and the IDP (within the TI network) can substitute a forged discovery document. The forged document redirects uri_puk_idp_enc and uri_puk_idp_sig to attacker-controlled URLs. The client then encrypts the SMC-B-signed challenge response to the attacker's encryption key and POSTs it to the attacker's auth endpoint. This captures the signed authentication material. This vulnerability is fixed in 1.2.2.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/oviva-ag/epa4all-client/securi… | x_refsource_CONFIRM |
| https://github.com/oviva-ag/epa4all-client/pull/36 | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| oviva-ag | epa4all-client |
Affected:
< 1.2.2
|
|
| com.oviva.telematik | epa4all-client |
Affected:
< 1.2.2
|
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CVE-2026-44748 (GCVE-0-2026-44748)
Vulnerability from cvelistv5 – Published: 2026-06-09 00:20 – Updated: 2026-06-09 13:03
VLAI
EPSS
VEX
Title
XML Signature Wrapping in SAML Authentication in SAP NetWeaver AS ABAP and ABAP Platform
Summary
SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampered identity information leading to unauthorized access to sensitive user data and potential disruption of normal system usage. This causes a high impact on confidentiality, integrity and availability of the application.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | SAP NetWeaver AS ABAP and ABAP Platform |
Affected:
SAP_BASIS 702
Affected: SAP_BASIS 731 Affected: SAP_BASIS 740 Affected: SAP_BASIS 750 Affected: SAP_BASIS 751 Affected: SAP_BASIS 752 Affected: SAP_BASIS 753 Affected: SAP_BASIS 754 Affected: SAP_BASIS 755 Affected: SAP_BASIS 756 Affected: SAP_BASIS 757 Affected: SAP_BASIS 758 Affected: SAP_BASIS 816 Affected: SAP_BASIS 918 Affected: SAP_BASIS 919 |
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CVE-2026-44720 (GCVE-0-2026-44720)
Vulnerability from cvelistv5 – Published: 2026-05-27 21:02 – Updated: 2026-06-02 18:09
VLAI
EPSS
VEX
Title
OpenLearnX: Critical Authentication Bypass via JWT Signature Verification Disabled Leading to Account Takeover
Summary
OpenLearnX is an open-source, decentralized learning and assessment platform. Prior to 2.0.4, a critical authentication vulnerability was identified in OpenLearnX that could allow unauthorized access to user accounts under specific conditions. This vulnerability is fixed in 2.0.4.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/th30d4y/OpenLearnX/security/ad… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| th30d4y | OpenLearnX |
Affected:
< 2.0.4
|
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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.