CWE-295
Improper Certificate Validation
The product does not validate, or incorrectly validates, a certificate.
CVE-2026-4740 (GCVE-0-2026-4740)
Vulnerability from cvelistv5 – Published: 2026-04-07 14:30 – Updated: 2026-04-09 14:40
VLAI
Title
Rhacm: open cluster management (ocm): cross-cluster privilege escalation via improper kubernetes client certificate renewal validation
Summary
A flaw was found in Open Cluster Management (OCM), the technology underlying Red Hat Advanced Cluster Management (ACM). Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This enables cross-cluster privilege escalation and may allow an attacker to gain control over other managed clusters, including the hub cluster.
Severity
8.2 (High)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-4740 | vdb-entryx_refsource_REDHAT |
| https://blog.arfevrier.fr/open-cluster-management… | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2450590 | issue-trackingx_refsource_REDHAT |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Multicluster Engine for Kubernetes |
cpe:/a:redhat:multicluster_engine |
|
| Red Hat | Multicluster Engine for Kubernetes |
cpe:/a:redhat:multicluster_engine |
Date Public
2026-04-07 14:00
Credits
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CVE-2026-48246 (GCVE-0-2026-48246)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-21 18:05
VLAI
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in ajax/reports.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in ajax/reports.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for Google Maps Directions API lookups during incident report generation. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| 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 |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48247 (GCVE-0-2026-48247)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-21 18:05
VLAI
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in incs/functions.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in incs/functions.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests for general-purpose outbound HTTPS requests issued by the shared helper functions. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| 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 |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48248 (GCVE-0-2026-48248)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-26 11:52
VLAI
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in incs/login.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in incs/login.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests issued during the login/authentication flow. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| 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 |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-48249 (GCVE-0-2026-48249)
Vulnerability from cvelistv5 – Published: 2026-05-21 17:11 – Updated: 2026-05-26 11:52
VLAI
Title
Open ISES Tickets < 3.44.2 Disabled TLS Certificate Verification in rm/incs/mobile_login.inc.php
Summary
Open ISES Tickets before 3.44.2 disables TLS certificate verification in rm/incs/mobile_login.inc.php by setting CURLOPT_SSL_VERIFYPEER to false (and not setting CURLOPT_SSL_VERIFYHOST) when issuing outbound HTTPS requests issued during the mobile (RouteMate) login flow. An attacker positioned on the network path between the server and the remote endpoint can present a forged certificate to intercept, monitor, or modify the request and response, including any API keys or session-bearing data in transit.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| 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 |
Impacted products
Date Public
2026-04-02 00:00
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CVE-2026-5194 (GCVE-0-2026-5194)
Vulnerability from cvelistv5 – Published: 2026-04-09 19:30 – Updated: 2026-05-23 22:06
VLAI
Title
wolfSSL ECDSA Certificate Verification
Summary
Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication if the public CA key used is also known. This affects ECDSA/ECC verification when EdDSA or ML-DSA is also enabled.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/wolfSSL/wolfssl/pull/10131 | patch |
Impacted products
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CVE-2026-5263 (GCVE-0-2026-5263)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:15 – Updated: 2026-04-10 18:09
VLAI
Title
URI nameConstraints not enforced in ConfirmNameConstraints()
Summary
URI nameConstraints from constrained intermediate CAs are parsed but not enforced during certificate chain verification in wolfcrypt/src/asn.c. A compromised or malicious sub-CA could issue leaf certificates with URI SAN entries that violate the nameConstraints of the issuing CA, and wolfSSL would accept them as valid.
Severity
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
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CVE-2026-5501 (GCVE-0-2026-5501)
Vulnerability from cvelistv5 – Published: 2026-04-10 03:07 – Updated: 2026-04-22 13:59
VLAI
Title
Improper Certificate Signature Verification in X.509 Chain Validation Allows Forged Leaf Certificates
Summary
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Severity
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
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CVE-2026-5787 (GCVE-0-2026-5787)
Vulnerability from cvelistv5 – Published: 2026-05-07 15:36 – Updated: 2026-05-08 03:55
VLAI
Summary
An Improper Certificate Validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remote unauthenticated attacker to impersonate registered Sentry hosts and obtain valid CA-signed client certificates.
Severity
8.9 (High)
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Endpoint Manager Mobile |
Unaffected:
12.8.0.1
(custom)
Unaffected: 12.7.0.1 (custom) Unaffected: 12.6.1.1 (custom) |
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CVE-2026-7821 (GCVE-0-2026-7821)
Vulnerability from cvelistv5 – Published: 2026-05-07 15:26 – Updated: 2026-05-07 16:15
VLAI
Summary
Improper certificate validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remote unauthenticated attacker to enroll a device belonging to a restricted set of unenrolled devices, leading to information disclosure about EPMM appliance and impacting on the integrity of the newly enrolled device identity.
Severity
7.4 (High)
CWE
- CWE-295 - Improper certificate validation
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ivanti | Endpoint Manager Mobile |
Unaffected:
12.6.1.1
Unaffected: 12.7.0.1 Unaffected: 12.8.0.1 |
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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.