CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
1911 vulnerabilities reference this CWE, most recent first.
GHSA-FGPW-Q4C2-RRGC
Vulnerability from github – Published: 2022-05-24 17:25 – Updated: 2023-01-27 21:31An issue was discovered in NLnet Labs Routinator 0.1.0 through 0.7.1. It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation ".roa" files or X509 Certificate Revocation List files from the RPKI relying party's view.
{
"affected": [],
"aliases": [
"CVE-2020-17366"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-08-05T22:15:00Z",
"severity": "MODERATE"
},
"details": "An issue was discovered in NLnet Labs Routinator 0.1.0 through 0.7.1. It allows remote attackers to bypass intended access restrictions or to cause a denial of service on dependent routing systems by strategically withholding RPKI Route Origin Authorisation \".roa\" files or X509 Certificate Revocation List files from the RPKI relying party\u0027s view.",
"id": "GHSA-fgpw-q4c2-rrgc",
"modified": "2023-01-27T21:31:10Z",
"published": "2022-05-24T17:25:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-17366"
},
{
"type": "WEB",
"url": "https://github.com/NLnetLabs/routinator/issues/319"
},
{
"type": "WEB",
"url": "https://github.com/NLnetLabs/routinator/releases/tag/v0.8.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FGQ2-WJJ2-9C78
Vulnerability from github – Published: 2022-05-13 01:28 – Updated: 2022-05-13 01:28The (1) update and (2) package-installation features in MODX Revolution 2.5.4-pl and earlier do not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and trigger the execution of arbitrary code via a crafted certificate.
{
"affected": [],
"aliases": [
"CVE-2017-7322"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-03-30T07:59:00Z",
"severity": "HIGH"
},
"details": "The (1) update and (2) package-installation features in MODX Revolution 2.5.4-pl and earlier do not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and trigger the execution of arbitrary code via a crafted certificate.",
"id": "GHSA-fgq2-wjj2-9c78",
"modified": "2022-05-13T01:28:57Z",
"published": "2022-05-13T01:28:57Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-7322"
},
{
"type": "WEB",
"url": "https://mazinahmed.net/services/public-reports/ModX%20-%20Responsible%20Disclosure%20-%20January%202017.pdf"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/97228"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FGVJ-4M6X-J67F
Vulnerability from github – Published: 2022-05-24 17:17 – Updated: 2024-11-20 15:30A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.
{
"affected": [],
"aliases": [
"CVE-2020-8156"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-05-12T13:15:00Z",
"severity": "MODERATE"
},
"details": "A missing verification of the TLS host in Nextcloud Mail 1.1.3 allowed a man in the middle attack.",
"id": "GHSA-fgvj-4m6x-j67f",
"modified": "2024-11-20T15:30:48Z",
"published": "2022-05-24T17:17:44Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8156"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KC6HLX5SG4PZO6Y54D2LFJ4ATG76BKOP"
},
{
"type": "WEB",
"url": "https://nextcloud.com/security/advisory/?id=NC-SA-2020-020"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-FHHX-R983-44XC
Vulnerability from github – Published: 2022-03-30 00:00 – Updated: 2022-11-29 23:03Jenkins Proxmox Plugin 0.6.0 and earlier disables SSL/TLS certificate validation globally for the Jenkins controller JVM when configured to ignore SSL/TLS issues.
{
"affected": [
{
"package": {
"ecosystem": "Maven",
"name": "org.jenkins-ci.plugins:proxmox"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.7.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2022-28142"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2022-11-29T23:03:10Z",
"nvd_published_at": "2022-03-29T13:15:00Z",
"severity": "MODERATE"
},
"details": "Jenkins Proxmox Plugin 0.6.0 and earlier disables SSL/TLS certificate validation globally for the Jenkins controller JVM when configured to ignore SSL/TLS issues.",
"id": "GHSA-fhhx-r983-44xc",
"modified": "2022-11-29T23:03:10Z",
"published": "2022-03-30T00:00:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-28142"
},
{
"type": "PACKAGE",
"url": "https://github.com/jenkinsci/proxmox-plugin"
},
{
"type": "WEB",
"url": "https://www.jenkins.io/security/advisory/2022-03-29/#SECURITY-2081"
},
{
"type": "WEB",
"url": "http://www.openwall.com/lists/oss-security/2022/03/29/1"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
],
"summary": "SSL/TLS certificate validation globally disabled by Jenkins Proxmox Plugin"
}
GHSA-FHJP-88MM-6Q8P
Vulnerability from github – Published: 2022-05-17 02:44 – Updated: 2025-04-20 03:37The Interval International app 3.3 through 3.5.1 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
{
"affected": [],
"aliases": [
"CVE-2017-8941"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-05-15T18:29:00Z",
"severity": "MODERATE"
},
"details": "The Interval International app 3.3 through 3.5.1 for iOS does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.",
"id": "GHSA-fhjp-88mm-6q8p",
"modified": "2025-04-20T03:37:44Z",
"published": "2022-05-17T02:44:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-8941"
},
{
"type": "WEB",
"url": "https://medium.com/%40chronic_9612/follow-up-76-popular-apps-confirmed-vulnerable-to-silent-interception-of-tls-protected-data-64185035029f"
},
{
"type": "WEB",
"url": "https://medium.com/@chronic_9612/follow-up-76-popular-apps-confirmed-vulnerable-to-silent-interception-of-tls-protected-data-64185035029f"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-FHQ3-2GF3-8F3J
Vulnerability from github – Published: 2026-05-06 22:31 – Updated: 2026-05-14 20:42An unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. As reported by Bilal Teke.
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "misp-modules"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "3.0.7"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-44363"
],
"database_specific": {
"cwe_ids": [
"CWE-295",
"CWE-918"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-06T22:31:03Z",
"nvd_published_at": "2026-05-13T20:16:23Z",
"severity": "MODERATE"
},
"details": "An unsafe remote resource fetching vulnerability existed in MISP Modules expansion modules. The html_to_markdown module accepted arbitrary HTTP(S) URLs without sufficient validation, which could allow Server-Side Request Forgery against loopback, private, or link-local network resources. Additionally, the qrcode module disabled TLS certificate verification when retrieving remote images, exposing requests to potential man-in-the-middle interception or response tampering. The issue was fixed by validating URL schemes, blocking local and private address ranges, resolving hostnames before fetching, enforcing request timeouts, and re-enabling TLS certificate verification. As reported by Bilal Teke.",
"id": "GHSA-fhq3-2gf3-8f3j",
"modified": "2026-05-14T20:42:26Z",
"published": "2026-05-06T22:31:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/MISP/misp-modules/security/advisories/GHSA-fhq3-2gf3-8f3j"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44363"
},
{
"type": "WEB",
"url": "https://github.com/MISP/misp-modules/commit/01a522f2772fc31eeed379ccf23750c8a3d401db"
},
{
"type": "PACKAGE",
"url": "https://github.com/MISP/misp-modules"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H",
"type": "CVSS_V4"
}
],
"summary": "misp-modules has nsafe remote resource fetching in expansion"
}
GHSA-FJ3M-2R8F-M4X9
Vulnerability from github – Published: 2023-09-21 21:31 – Updated: 2025-11-04 21:30A certificate validation issue was addressed. This issue is fixed in iOS 16.7 and iPadOS 16.7, OS 17.0.1 and iPadOS 17.0.1, watchOS 9.6.3, macOS Ventura 13.6, watchOS 10.0.1. A malicious app may be able to bypass signature validation. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.
{
"affected": [],
"aliases": [
"CVE-2023-41991"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-21T19:15:11Z",
"severity": "MODERATE"
},
"details": "A certificate validation issue was addressed. This issue is fixed in iOS 16.7 and iPadOS 16.7, OS 17.0.1 and iPadOS 17.0.1, watchOS 9.6.3, macOS Ventura 13.6, watchOS 10.0.1. A malicious app may be able to bypass signature validation. Apple is aware of a report that this issue may have been actively exploited against versions of iOS before iOS 16.7.",
"id": "GHSA-fj3m-2r8f-m4x9",
"modified": "2025-11-04T21:30:39Z",
"published": "2023-09-21T21:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-41991"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213926"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213927"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213928"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213929"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213931"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213926"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213927"
},
{
"type": "WEB",
"url": "https://support.apple.com/kb/HT213931"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-41991"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Oct/5"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Sep/14"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Sep/15"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Sep/16"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Sep/17"
},
{
"type": "WEB",
"url": "http://seclists.org/fulldisclosure/2023/Sep/19"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-FJ9M-2HQ3-2GHM
Vulnerability from github – Published: 2023-09-13 18:31 – Updated: 2024-04-04 07:39An improper certification validation vulnerability in the Insider Threat Management (ITM) Agent for MacOS could be used by an anonymous actor on an adjacent network to establish a man-in-the-middle position between the agent and the ITM server after the agent has registered. All versions prior to 7.14.3.69 are affected. Agents for Windows, Linux, and Cloud are unaffected.
{
"affected": [],
"aliases": [
"CVE-2023-4801"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2023-09-13T16:15:10Z",
"severity": "HIGH"
},
"details": "An improper certification validation vulnerability in the Insider Threat Management (ITM) Agent for MacOS could be used by an anonymous actor on an adjacent network to establish a man-in-the-middle position between the agent and the ITM server after the agent has registered. All versions prior to 7.14.3.69 are affected. Agents for Windows, Linux, and Cloud are unaffected.",
"id": "GHSA-fj9m-2hq3-2ghm",
"modified": "2024-04-04T07:39:22Z",
"published": "2023-09-13T18:31:26Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-4801"
},
{
"type": "WEB",
"url": "https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-0006"
},
{
"type": "WEB",
"url": "https://www.proofpoint.com/us/security/security-advisories/pfpt-sa-2023-006"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-FJHP-RW56-P66F
Vulnerability from github – Published: 2022-05-13 01:13 – Updated: 2022-05-13 01:13ARM mbedTLS version 2.7.0 and earlier contains a Ciphersuite Allows Incorrectly Signed Certificates vulnerability in mbedtls_ssl_get_verify_result() that can result in ECDSA-signed certificates are accepted, when only RSA-signed ones should be.. This attack appear to be exploitable via Peers negotiate a TLS-ECDH-RSA-* ciphersuite. Any of the peers can then provide an ECDSA-signed certificate, when only an RSA-signed one should be accepted..
{
"affected": [],
"aliases": [
"CVE-2018-1000520"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-06-26T16:29:00Z",
"severity": "HIGH"
},
"details": "ARM mbedTLS version 2.7.0 and earlier contains a Ciphersuite Allows Incorrectly Signed Certificates vulnerability in mbedtls_ssl_get_verify_result() that can result in ECDSA-signed certificates are accepted, when only RSA-signed ones should be.. This attack appear to be exploitable via Peers negotiate a TLS-ECDH-RSA-* ciphersuite. Any of the peers can then provide an ECDSA-signed certificate, when only an RSA-signed one should be accepted..",
"id": "GHSA-fjhp-rw56-p66f",
"modified": "2022-05-13T01:13:48Z",
"published": "2022-05-13T01:13:48Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2018-1000520"
},
{
"type": "WEB",
"url": "https://github.com/ARMmbed/mbedtls/issues/1561"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-FJJV-XP9P-25R7
Vulnerability from github – Published: 2022-05-17 02:26 – Updated: 2022-05-17 02:26libinfinity before 0.6.6-1 does not validate expired SSL certificates, which allows remote attackers to have unspecified impact via unknown vectors.
{
"affected": [],
"aliases": [
"CVE-2015-3886"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-07-21T14:29:00Z",
"severity": "CRITICAL"
},
"details": "libinfinity before 0.6.6-1 does not validate expired SSL certificates, which allows remote attackers to have unspecified impact via unknown vectors.",
"id": "GHSA-fjjv-xp9p-25r7",
"modified": "2022-05-17T02:26:07Z",
"published": "2022-05-17T02:26:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2015-3886"
},
{
"type": "WEB",
"url": "https://github.com/gobby/gobby/issues/61"
},
{
"type": "WEB",
"url": "https://github.com/gobby/libinfinity/commit/c97f870f5ae13112988d9f8ad464b4f679903706"
},
{
"type": "WEB",
"url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=783601"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1221266"
},
{
"type": "WEB",
"url": "http://seclists.org/oss-sec/2015/q2/410"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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.