A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.
Metrics
Affected Vendors & Products
References
History
Tue, 02 Jun 2026 15:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
|
| References |
|
Mon, 01 Jun 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/o:redhat:enterprise_linux:10.2 | |
| References |
|
Thu, 28 May 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Wed, 27 May 2026 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Gnu
Gnu gnutls Redhat hardened Images Redhat openshift Container Platform |
|
| Vendors & Products |
Gnu
Gnu gnutls Redhat hardened Images Redhat openshift Container Platform |
Wed, 27 May 2026 03:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos |
|
| References |
|
Tue, 26 May 2026 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks. | |
| Title | Gnutls: gnutls: certificate validation bypass due to oversized subject alternative name | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
|
| Weaknesses | CWE-1284 | |
| CPEs | cpe:/a:redhat:hummingbird:1 cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:6 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
|
| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat hummingbird Redhat openshift |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published: 2026-05-26T21:29:32.887Z
Updated: 2026-06-02T15:34:39.371Z
Reserved: 2026-04-23T11:23:46.517Z
Link: CVE-2026-42013
Updated: 2026-05-28T14:13:54.446Z
Status : Awaiting Analysis
Published: 2026-05-26T22:16:42.050
Modified: 2026-06-02T16:16:40.120
Link: CVE-2026-42013
No data.