CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2154 vulnerabilities reference this CWE, most recent first.
GHSA-34P9-F4Q3-C4R7
Vulnerability from github – Published: 2021-08-25 20:43 – Updated: 2023-06-13 20:14All versions of rust-openssl prior to 0.9.0 contained numerous insecure defaults including off-by-default certificate verification and no API to perform hostname verification. Unless configured correctly by a developer, these defaults could allow an attacker to perform man-in-the-middle attacks. The problem was addressed in newer versions by enabling certificate verification by default and exposing APIs to perform hostname verification. Use the SslConnector and SslAcceptor types to take advantage of these new features (as opposed to the lower-level SslContext type).
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "openssl"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2016-10931"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2021-08-19T21:25:06Z",
"nvd_published_at": "2019-08-26T12:15:00Z",
"severity": "HIGH"
},
"details": "All versions of rust-openssl prior to 0.9.0 contained numerous insecure defaults including off-by-default certificate verification and no API to perform hostname verification. Unless configured correctly by a developer, these defaults could allow an attacker to perform man-in-the-middle attacks. The problem was addressed in newer versions by enabling certificate verification by default and exposing APIs to perform hostname verification. Use the SslConnector and SslAcceptor types to take advantage of these new features (as opposed to the lower-level SslContext type).",
"id": "GHSA-34p9-f4q3-c4r7",
"modified": "2023-06-13T20:14:09Z",
"published": "2021-08-25T20:43:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-10931"
},
{
"type": "PACKAGE",
"url": "https://github.com/sfackler/rust-openssl"
},
{
"type": "WEB",
"url": "https://github.com/sfackler/rust-openssl/releases/tag/v0.9.0"
},
{
"type": "WEB",
"url": "https://rustsec.org/advisories/RUSTSEC-2016-0001.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Improper Certificate Validation in openssl"
}
GHSA-3522-8QWX-4H39
Vulnerability from github – Published: 2022-11-02 12:00 – Updated: 2022-11-03 19:00A certificate validation issue existed in the handling of WKWebView. This issue was addressed with improved validation. This issue is fixed in tvOS 16.1, iOS 16.1 and iPadOS 16, macOS Ventura 13, watchOS 9.1. Processing a maliciously crafted certificate may lead to arbitrary code execution.
{
"affected": [],
"aliases": [
"CVE-2022-42813"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-11-01T20:15:00Z",
"severity": "CRITICAL"
},
"details": "A certificate validation issue existed in the handling of WKWebView. This issue was addressed with improved validation. This issue is fixed in tvOS 16.1, iOS 16.1 and iPadOS 16, macOS Ventura 13, watchOS 9.1. Processing a maliciously crafted certificate may lead to arbitrary code execution.",
"id": "GHSA-3522-8qwx-4h39",
"modified": "2022-11-03T19:00:29Z",
"published": "2022-11-02T12:00:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-42813"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213488"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213489"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213491"
},
{
"type": "WEB",
"url": "https://support.apple.com/en-us/HT213492"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-35J2-P8FH-X966
Vulnerability from github – Published: 2022-05-24 16:51 – Updated: 2023-03-03 23:07A TLS certificate validation flaw was found in Elastic APM agent for Ruby versions before 2.9.0. When specifying a trusted server CA certificate via the server_ca_cert setting, the Ruby agent would not properly verify the certificate returned by the APM server. This could result in a man in the middle style attack against the Ruby agent.
{
"affected": [
{
"package": {
"ecosystem": "RubyGems",
"name": "elastic-apm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.9.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2019-7615"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": true,
"github_reviewed_at": "2023-03-03T23:07:57Z",
"nvd_published_at": "2019-07-30T22:15:00Z",
"severity": "HIGH"
},
"details": "A TLS certificate validation flaw was found in Elastic APM agent for Ruby versions before 2.9.0. When specifying a trusted server CA certificate via the `server_ca_cert` setting, the Ruby agent would not properly verify the certificate returned by the APM server. This could result in a man in the middle style attack against the Ruby agent.",
"id": "GHSA-35j2-p8fh-x966",
"modified": "2023-03-03T23:07:57Z",
"published": "2022-05-24T16:51:49Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-7615"
},
{
"type": "WEB",
"url": "https://github.com/elastic/apm-agent-ruby/pull/449"
},
{
"type": "PACKAGE",
"url": "https://github.com/elastic/apm-agent-ruby"
},
{
"type": "WEB",
"url": "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/elastic-apm/CVE-2019-7615.yml"
},
{
"type": "WEB",
"url": "https://www.elastic.co/community/security"
}
],
"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:N",
"type": "CVSS_V3"
}
],
"summary": "Elastic APM agent for Ruby vulnerable to Improper Certificate Validation"
}
GHSA-3679-62VM-QQ5R
Vulnerability from github – Published: 2025-12-26 06:30 – Updated: 2026-01-07 21:31Cybersecurity Nozomi Networks Labs, a specialized security company focused on Industrial Control Systems (ICS) and OT/IoT security, has found a flaw that camera's client service does not perform certificate validation. The manufacturer has released patch firmware for the flaw, please refer to the manufacturer's report for details and workarounds.
{
"affected": [],
"aliases": [
"CVE-2025-52598"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-12-26T05:16:07Z",
"severity": "MODERATE"
},
"details": "Cybersecurity Nozomi Networks Labs, a specialized security company focused on Industrial Control Systems (ICS) and OT/IoT security, has found a flaw that camera\u0027s client service does not perform certificate validation. The manufacturer has released patch firmware for the flaw, please refer to the manufacturer\u0027s report for details and workarounds.",
"id": "GHSA-3679-62vm-qq5r",
"modified": "2026-01-07T21:31:46Z",
"published": "2025-12-26T06:30:27Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-52598"
},
{
"type": "WEB",
"url": "https://www.hanwhavision.com/wp-content/uploads/2025/12/Camera-Vulnerability-ReportCVE-2025-5259852601-8075.pdf"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-3683-2C96-6V5C
Vulnerability from github – Published: 2022-05-24 19:08 – Updated: 2022-06-29 00:00Due to the Asset Explorer agent not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer's Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent's HTTP request verifying its authtoken. In AEAgent.cpp, the agent responding back over HTTP is vulnerable to a Heap Overflow if the POST payload response is too large. The POST payload response is converted to Unicode using vswprintf. This is written to a buffer only 0x2000 bytes big. If POST payload is larger, then heap overflow will occur.
{
"affected": [],
"aliases": [
"CVE-2021-20109"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-07-19T15:15:00Z",
"severity": "HIGH"
},
"details": "Due to the Asset Explorer agent not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer\u0027s Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent\u0027s HTTP request verifying its authtoken. In AEAgent.cpp, the agent responding back over HTTP is vulnerable to a Heap Overflow if the POST payload response is too large. The POST payload response is converted to Unicode using vswprintf. This is written to a buffer only 0x2000 bytes big. If POST payload is larger, then heap overflow will occur.",
"id": "GHSA-3683-2c96-6v5c",
"modified": "2022-06-29T00:00:40Z",
"published": "2022-05-24T19:08:22Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20109"
},
{
"type": "WEB",
"url": "https://www.tenable.com/security/research/tra-2021-30"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-3685-XXGW-JP8H
Vulnerability from github – Published: 2022-05-13 01:31 – Updated: 2022-05-13 01:31Kubevirt/virt-cdi-importer, versions 1.4.0 to 1.5.3 inclusive, were reported to disable TLS certificate validation when importing data into PVCs from container registries. This could enable man-in-the-middle attacks between a container registry and the virt-cdi-component, leading to possible undetected tampering of trusted container image content.
{
"affected": [],
"aliases": [
"CVE-2019-3841"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-03-25T18:29:00Z",
"severity": "MODERATE"
},
"details": "Kubevirt/virt-cdi-importer, versions 1.4.0 to 1.5.3 inclusive, were reported to disable TLS certificate validation when importing data into PVCs from container registries. This could enable man-in-the-middle attacks between a container registry and the virt-cdi-component, leading to possible undetected tampering of trusted container image content.",
"id": "GHSA-3685-xxgw-jp8h",
"modified": "2022-05-13T01:31:16Z",
"published": "2022-05-13T01:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-3841"
},
{
"type": "WEB",
"url": "https://github.com/kubevirt/containerized-data-importer/issues/678"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3841"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-36R8-H3X6-X34C
Vulnerability from github – Published: 2026-08-26 18:31 – Updated: 2026-08-26 18:31Netmaker disables certificate verification on the connection to the configured mail server. The sender in pro/email/smtp.go assigns a TLS configuration whose skip-verify field is set to true unconditionally, directly beneath a comment stating that the setting should be false in production. No configuration value governs it and no code path restores verification, so the client accepts any certificate the mail server presents, including one an interposing party supplies. Mail that Netmaker sends over that connection includes password-reset messages carrying single-use tokens and user invitations carrying enrolment links, so a party positioned on the path between the server and its mail relay can read those messages in transit and use a captured reset token before the intended recipient does. The setting is absent from the development branch but present in the latest release.
{
"affected": [],
"aliases": [
"CVE-2026-81034"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-08-26T16:16:46Z",
"severity": "HIGH"
},
"details": "Netmaker disables certificate verification on the connection to the configured mail server. The sender in pro/email/smtp.go assigns a TLS configuration whose skip-verify field is set to true unconditionally, directly beneath a comment stating that the setting should be false in production. No configuration value governs it and no code path restores verification, so the client accepts any certificate the mail server presents, including one an interposing party supplies. Mail that Netmaker sends over that connection includes password-reset messages carrying single-use tokens and user invitations carrying enrolment links, so a party positioned on the path between the server and its mail relay can read those messages in transit and use a captured reset token before the intended recipient does. The setting is absent from the development branch but present in the latest release.",
"id": "GHSA-36r8-h3x6-x34c",
"modified": "2026-08-26T18:31:56Z",
"published": "2026-08-26T18:31:56Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81034"
},
{
"type": "WEB",
"url": "https://github.com/gravitl/netmaker/issues/4062"
},
{
"type": "WEB",
"url": "https://github.com/gravitl/netmaker"
},
{
"type": "WEB",
"url": "https://github.com/gravitl/netmaker/blob/v1.6.0/pro/email/smtp.go"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/netmaker-through-1.6.0-improper-certificate-validation-in-smtp-client"
}
],
"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:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-36X7-V6H4-4Q78
Vulnerability from github – Published: 2022-05-24 19:21 – Updated: 2022-05-24 19:21Improper certificate validation vulnerability in SMTP Client allows man-in-the-middle attack to retrieve sensitive information from the Command Centre Server. This issue affects: Gallagher Command Centre 8.50 versions prior to 8.50.2048 (MR3); 8.40 versions prior to 8.40.2063 (MR4); 8.30 versions prior to 8.30.1454 (MR4) ; version 8.20 and prior versions.
{
"affected": [],
"aliases": [
"CVE-2021-23167"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-11-18T18:15:00Z",
"severity": "MODERATE"
},
"details": "Improper certificate validation vulnerability in SMTP Client allows man-in-the-middle attack to retrieve sensitive information from the Command Centre Server. This issue affects: Gallagher Command Centre 8.50 versions prior to 8.50.2048 (MR3); 8.40 versions prior to 8.40.2063 (MR4); 8.30 versions prior to 8.30.1454 (MR4) ; version 8.20 and prior versions.",
"id": "GHSA-36x7-v6h4-4q78",
"modified": "2022-05-24T19:21:03Z",
"published": "2022-05-24T19:21:03Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-23167"
},
{
"type": "WEB",
"url": "https://security.gallagher.com/Security-Advisories/CVE-2021-23167"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-3783-6PMV-W66F
Vulnerability from github – Published: 2022-05-13 01:25 – Updated: 2025-04-20 03:37The Dollar Bank Mobile app 2.6.3 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-2017-5905"
],
"database_specific": {
"cwe_ids": [
"CWE-295"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2017-05-05T07:29:00Z",
"severity": "MODERATE"
},
"details": "The Dollar Bank Mobile app 2.6.3 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-3783-6pmv-w66f",
"modified": "2025-04-20T03:37:14Z",
"published": "2022-05-13T01:25:40Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-5905"
},
{
"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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-379P-37XC-Q963
Vulnerability from github – Published: 2022-05-24 17:21 – Updated: 2025-10-22 20:54An issue was discovered in Mattermost Server before 3.0.0. It does not ensure that a cookie is used over SSL.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/mattermost/mattermost-server"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2016-11076"
],
"database_specific": {
"cwe_ids": [
"CWE-295",
"CWE-614"
],
"github_reviewed": true,
"github_reviewed_at": "2025-10-22T20:54:31Z",
"nvd_published_at": "2020-06-19T20:15:00Z",
"severity": "HIGH"
},
"details": "An issue was discovered in Mattermost Server before 3.0.0. It does not ensure that a cookie is used over SSL.",
"id": "GHSA-379p-37xc-q963",
"modified": "2025-10-22T20:54:31Z",
"published": "2022-05-24T17:21:01Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2016-11076"
},
{
"type": "WEB",
"url": "https://github.com/mattermost/mattermost/commit/bac25154d659883c801b3bb9a0687f46570f5bbf"
},
{
"type": "PACKAGE",
"url": "https://github.com/mattermost/mattermost"
},
{
"type": "WEB",
"url": "https://mattermost.com/security-updates"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "Mattermost Server does not check if cookies are used over SSL"
}
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.