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CWE-295
Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.
CVE-2026-29140 (GCVE-0-2026-29140)
Vulnerability from cvelistv5 – Published: 2026-04-02 08:27 – Updated: 2026-04-02 14:48
VLAI
Title
S/MIME Signature Additional Certificate
Summary
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to cause attacker-controlled certificates to be used for future encryption to a victim by adding the certificates to S/MIME signatures.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://downloads.seppmail.com/extrelnotes/150/ER… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail | Secure Email Gateway |
Affected:
0 , < 15.0.3
(custom)
|
Credits
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CVE-2026-30794 (GCVE-0-2026-30794)
Vulnerability from cvelistv5 – Published: 2026-03-05 15:24 – Updated: 2026-06-22 13:07
VLAI
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
Show details on NVD website{
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CVE-2026-30836 (GCVE-0-2026-30836)
Vulnerability from cvelistv5 – Published: 2026-03-19 20:37 – Updated: 2026-03-25 14:16
VLAI
Title
Step CA: Unauthenticated Certificate Issuance via SCEP UpdateReq (MessageType=18)
Summary
Step CA is an online certificate authority for secure, automated certificate management for DevOps. Versions 0.30.0-rc6 and below do not safeguard against unauthenticated certificate issuance through the SCEP UpdateReq. This issue has been fixed in version 0.30.0.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/smallstep/certificates/securit… | x_refsource_CONFIRM |
| https://github.com/smallstep/certificates/commit/… | x_refsource_MISC |
| https://github.com/smallstep/certificates/release… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| smallstep | certificates |
Affected:
< 0.30.0
|
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CVE-2026-30840 (GCVE-0-2026-30840)
Vulnerability from cvelistv5 – Published: 2026-03-07 05:39 – Updated: 2026-03-09 20:24
VLAI
Title
Wallos: Server-Side Request Forgery (SSRF) in Notification Testers
Summary
Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.6.2, there is a server-side request forgery vulnerability in notification testers. This issue has been patched in version 4.6.2.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/ellite/Wallos/security/advisor… | x_refsource_CONFIRM |
| https://github.com/ellite/Wallos/commit/e8a513591… | x_refsource_MISC |
| https://github.com/ellite/Wallos/releases/tag/v4.6.2 | x_refsource_MISC |
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CVE-2026-3100 (GCVE-0-2026-3100)
Vulnerability from cvelistv5 – Published: 2026-02-25 05:52 – Updated: 2026-02-27 14:26
VLAI
Title
An improper certificate validation vulnerability was found in the FTP Backup on the ADM.
Summary
The FTP Backup on the ADM will not properly strictly enforce TLS certificate verification while connecting to an FTP server using FTPES/FTPS. An improper validated TLS/SSL certificates allows a remote attacker can intercept network traffic to perform a Man-in-the-Middle (MitM) attack, which may intercept, modify, or obtain sensitive information such as authentication credentials and backup data.
Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.2.RE51.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.asustor.com/security/security_advisor… | vendor-advisory |
Impacted products
Date Public
2026-02-25 05:45
Credits
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CVE-2026-31798 (GCVE-0-2026-31798)
Vulnerability from cvelistv5 – Published: 2026-03-13 19:15 – Updated: 2026-03-13 19:38
VLAI
Title
JumpServer Improper Certificate Validation in Custom SMS API Client
Summary
JumpServer is an open source bastion host and an operation and maintenance security audit system. Prior to v4.10.16-lts, JumpServer improperly validates certificates in the Custom SMS API Client. When JumpServer sends MFA/OTP codes via Custom SMS API, an attacker can intercept the request and capture the verification code BEFORE it reaches the user's phone. This vulnerability is fixed in v4.10.16-lts.
Severity
5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/jumpserver/jumpserver/security… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jumpserver | jumpserver |
Affected:
< 4.10.16-lts
|
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CVE-2026-32144 (GCVE-0-2026-32144)
Vulnerability from cvelistv5 – Published: 2026-04-07 12:28 – Updated: 2026-05-27 15:40
VLAI
Title
OCSP designated-responder authorization bypass via missing signature verification
Summary
Improper Certificate Validation vulnerability in Erlang OTP public_key (pubkey_ocsp module) allows OCSP designated-responder authorization bypass via missing signature verification.
The OCSP response validation in public_key:pkix_ocsp_validate/5 does not verify that a CA-designated responder certificate was cryptographically signed by the issuing CA. Instead, it only checks that the responder certificate's issuer name matches the CA's subject name and that the certificate has the OCSPSigning extended key usage. An attacker who can intercept or control OCSP responses can create a self-signed certificate with a matching issuer name and the OCSPSigning EKU, and use it to forge OCSP responses that mark revoked certificates as valid.
This affects SSL/TLS clients using OCSP stapling, which may accept connections to servers with revoked certificates, potentially transmitting sensitive data to compromised servers. Applications using the public_key:pkix_ocsp_validate/5 API directly are also affected, with impact depending on usage context.
This vulnerability is associated with program files lib/public_key/src/pubkey_ocsp.erl and program routines pubkey_ocsp:is_authorized_responder/3.
This issue affects OTP from OTP 27.0 until OTP 28.4.2 and 27.3.4.10 corresponding to public_key from 1.16 until 1.20.3 and 1.17.1.2, and ssl from 11.2 until 11.5.4 and 11.2.12.7.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/erlang/otp/security/advisories… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-32144.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-32144 | related |
| https://www.erlang.org/doc/system/versions.html#o… | x_version-scheme |
| https://github.com/erlang/otp/commit/ac7ff528be85… | patch |
| https://github.com/erlang/otp/commit/49033a6d93a5… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Erlang | OTP |
Affected:
1.16 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| Erlang | OTP |
Affected:
11.2 , < *
(otp)
cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
|
| Erlang | OTP |
Affected:
27.0 , < *
(otp)
Affected: 601a012837ea0a5c8095bf24223132824177124d , < * (git) cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:* |
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CVE-2026-32253 (GCVE-0-2026-32253)
Vulnerability from cvelistv5 – Published: 2026-05-22 17:07 – Updated: 2026-05-26 13:08
VLAI
Title
Sunshine: Authentication bypass via improper client certificate validation
Summary
Sunshine is a self-hosted game stream host for Moonlight. In versions prior to 2026.516.143833, the client-certificate authentication can be bypassed because of how OpenSSL verification results are handled. In src/crypto.cpp, the custom verify callback treats X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY, X509_V_ERR_CERT_NOT_YET_VALID, and X509_V_ERR_CERT_HAS_EXPIRED as success. This can allow an untrusted certificate to pass authentication and access protected HTTPS endpoints. This issue has been fixed in version 2026.516.143833.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/LizardByte/Sunshine/security/a… | x_refsource_CONFIRM |
| https://github.com/LizardByte/Sunshine/releases/t… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| LizardByte | Sunshine |
Affected:
< 2026.516.143833
|
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CVE-2026-32293 (GCVE-0-2026-32293)
Vulnerability from cvelistv5 – Published: 2026-03-17 17:19 – Updated: 2026-03-23 19:34
VLAI
Title
GL-iNet Comet (GL-RM1) KVM insufficient certificate validation
Summary
The GL-iNet Comet (GL-RM1) KVM connects to a GL-iNet site during boot-up to provision client and CA certificates. The GL-RM1 does not verify certificates used for this connection, allowing an attacker-in-the-middle to serve invalid client and CA certificates. The GL-RM1 will attempt to use the invalid certificates and fail to connect to the legitimate GL-iNet KVM cloud service.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Date Public
2026-03-17 00:00
Credits
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CVE-2026-32627 (GCVE-0-2026-32627)
Vulnerability from cvelistv5 – Published: 2026-03-13 20:48 – Updated: 2026-03-16 15:41
VLAI
Title
cpp-httplib has a Silent TLS Certificate Verification Bypass on HTTPS Redirect via Proxy
Summary
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and set_follow_location(true), any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new connection. The client will accept any certificate presented by the redirect target — expired, self-signed, or forged — without raising an error or notifying the application. A network attacker in a position to return a redirect response can fully intercept the follow-up HTTPS connection, including any credentials or session tokens in flight. This vulnerability is fixed in 0.37.2.
Severity
8.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/yhirose/cpp-httplib/security/a… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| yhirose | cpp-httplib |
Affected:
< 0.37.2
|
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Mitigation
Phases: Architecture and Design, Implementation
Description:
- Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
Phase: Implementation
Description:
- 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.