CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2039 vulnerabilities reference this CWE, most recent first.
CVE-2026-50752 (GCVE-0-2026-50752)
Vulnerability from cvelistv5 – Published: 2026-06-08 11:00 – Updated: 2026-06-10 13:36- CWE-295 - Improper Certificate Validation.
| Vendor | Product | Version | |
|---|---|---|---|
| checkpoint | Quantum Security Gateway |
Affected:
R82.10 with Jumbo Hotfix Take 19 or below
Affected: R82 with Jumbo Hotfix Take 103 or below Affected: R81.20 with Jumbo Hotfix Take 141 or below Affected: R81.10, R81, and R80.40 |
|
| checkpoint | Spark Firewalls |
Affected:
R80.20.X, R81.10.X, and R82.00.X
|
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CVE-2026-50578 (GCVE-0-2026-50578)
Vulnerability from cvelistv5 – Published: 2026-08-18 16:51 – Updated: 2026-08-18 17:45- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
| https://github.com/fbeta-GmbH/ePA3-Service-OpenSo… | x_refsource_CONFIRM |
| https://github.com/fbeta-GmbH/ePA3-Service-OpenSo… | x_refsource_MISC |
| https://github.com/fbeta-GmbH/ePA3-Service-OpenSo… | x_refsource_MISC |
| https://github.com/fbeta-GmbH/ePA3-Service-OpenSo… | x_refsource_MISC |
| https://www.machinespirits.de/advisory/4b68b0 | x_refsource_MISC |
| Vendor | Product | Version | |
|---|---|---|---|
| fbeta-GmbH | ePA3-Service-OpenSource |
Affected:
< 1.3.0
|
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CVE-2026-50302 (GCVE-0-2026-50302)
Vulnerability from cvelistv5 – Published: 2026-07-14 17:06 – Updated: 2026-08-31 15:26- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7548
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7548
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.8875
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.8875
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2525
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5386
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33158
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33158
(custom)
|
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CVE-2026-50149 (GCVE-0-2026-50149)
Vulnerability from cvelistv5 – Published: 2026-08-19 14:16 – Updated: 2026-08-25 02:03- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
| https://github.com/projectcontour/contour/securit… | x_refsource_CONFIRM |
| Vendor | Product | Version | |
|---|---|---|---|
| projectcontour | contour |
Affected:
>= 1.23.0, < 1.33.5
|
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CVE-2026-49457 (GCVE-0-2026-49457)
Vulnerability from cvelistv5 – Published: 2026-08-14 18:27 – Updated: 2026-08-14 19:30| URL | Tags |
|---|---|
| https://github.com/benoitc/erlang_quic/security/a… | x_refsource_CONFIRM |
| Vendor | Product | Version | |
|---|---|---|---|
| benoitc | erlang_quic |
Affected:
< 1.4.4
|
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CVE-2026-49283 (GCVE-0-2026-49283)
Vulnerability from cvelistv5 – Published: 2026-08-19 14:47 – Updated: 2026-08-19 18:19- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
| https://github.com/simplesamlphp/saml2/security/a… | x_refsource_CONFIRM |
| https://github.com/simplesamlphp/saml2/commit/4a7… | x_refsource_MISC |
| https://github.com/simplesamlphp/saml2/commit/a2c… | x_refsource_MISC |
| https://github.com/simplesamlphp/saml2/commit/d5c… | x_refsource_MISC |
| https://github.com/simplesamlphp/saml2/commit/e2d… | x_refsource_MISC |
| Vendor | Product | Version | |
|---|---|---|---|
| simplesamlphp | saml2 |
Affected:
< 4.19.3
Affected: >= 4.20.0, < 4.20.2 Affected: >= 5.0.0, < 5.0.6 Affected: >= 6.0.0, < 6.2.1 |
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CVE-2026-49267 (GCVE-0-2026-49267)
Vulnerability from cvelistv5 – Published: 2026-06-01 07:53 – Updated: 2026-06-02 16:42- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
| https://github.com/apache/airflow/pull/65346 | patch |
| https://lists.apache.org/thread/6v2ds757000msmjmo… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Airflow |
Affected:
2.0.0 , < 3.2.2
(semver)
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CVE-2026-48437 (GCVE-0-2026-48437)
Vulnerability from cvelistv5 – Published: 2026-08-11 16:59 – Updated: 2026-08-27 22:34- CWE-295 - Improper Certificate Validation (CWE-295)
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/content… | vendor-advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Content Credentials Rust SDK |
Affected:
0 , ≤ c2pa-v0.90.5
(custom)
Unaffected: c2pa-v0.90.6 (custom) |
|
| Adobe | Content Credentials Command-Line Tool |
Affected:
0 , ≤ c2patool-v0.27.5
(custom)
Unaffected: c2patool-v0.27.6 (custom) |
|
| Adobe | Content Credentials JS SDK |
Affected:
0 , ≤ @contentauth/c2pa-web@0.12.0
(custom)
Unaffected: @contentauth/c2pa-web@0.12.1 (custom) |
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CVE-2026-48249 (GCVE-0-2026-48249)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-07-28 01:49- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
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| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
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CVE-2026-48248 (GCVE-0-2026-48248)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-07-28 01:49- CWE-295 - Improper Certificate Validation
| URL | Tags |
|---|---|
| https://github.com/openises/tickets/releases/tag/… | release-notes |
| https://github.com/openises/tickets/commit/ecfeb4… | patch |
| https://www.vulncheck.com/advisories/open-ises-ti… | third-party-advisory |
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Mitigation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
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.