CVE-2026-42010

high

Published 2026-05-07 · Modified 2026-05-26

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CVSS v3

7.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS v4 NEW

—

not yet in upstream

VIR risk

7.1

Description

RHSA-2026:20612: gnutls security update (Important)

Predictions

Exploit likelihood

80%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

Mitigation details

Source: Red Hat Errata — Red Hat Inc. · View original ↗ · Open-Errata-API

Description gnutls: gnutls: Authentication Bypass via NUL Character in Username CVSS v3: 7.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N) Errata / fixed releases ProductPackageAdvisoryReleased Red Hat Enterprise Linux 10gnutls-0:3.8.10-4.el10_2RHSA-2026:206132026-05-26T00:00:00Z Red Hat Enterprise Linux 8gnutls-0:3.6.16-8.el8_10.6RHSA-2026:206112026-05-26T00:00:00Z Red Hat Enterprise Linux…

Description

gnutls: gnutls: Authentication Bypass via NUL Character in Username

CVSS v3: 7.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N)

Errata / fixed releases

Product	Package	Advisory	Released
Red Hat Enterprise Linux 10	`gnutls-0:3.8.10-4.el10_2`	RHSA-2026:20613	2026-05-26T00:00:00Z
Red Hat Enterprise Linux 8	`gnutls-0:3.6.16-8.el8_10.6`	RHSA-2026:20611	2026-05-26T00:00:00Z
Red Hat Enterprise Linux 8	`gnutls-0:3.6.16-8.el8_10.6`	RHSA-2026:20611	2026-05-26T00:00:00Z
Red Hat Hardened Images	`gnutls-main-3.8.13-1.hum1`	RHSA-2026:13274	2026-05-02T00:00:00Z

Package state

Product	Package	State
Red Hat Enterprise Linux 6	`gnutls`	Affected
Red Hat Enterprise Linux 7	`gnutls`	Affected
Red Hat Enterprise Linux 9	`gnutls`	Affected
Red Hat OpenShift Container Platform 4	`rhcos`	Affected

Apply commands

bash fix

Apply RHSA-2026:20613 for Red Hat Enterprise Linux 10

yum update -y gnutls
# or:
dnf upgrade -y gnutls

Affected

Vendor	Product	Version
redhat	Red Hat Enterprise Linux 6	`Affected`
redhat	Red Hat Enterprise Linux 7	`Affected`
redhat	Red Hat Enterprise Linux 9	`Affected`
redhat	Red Hat OpenShift Container Platform 4	`Affected`

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Windows Affected 1 release

Version	Status	Fixed in
—	Affected	—

Red Hat Mixed 7 releases

Version	Status	Fixed in
10.0	Affected	—
9.0	Affected	—
9	Fixed	—
8.0	Affected	—
8	Fixed	—
7.0	Affected	—
6.0	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`3.8.9-3+deb13u4`
sid	Fixed	`3.8.13-1`
forky	Fixed	`3.8.13-1`
bullseye	Fixed	`3.7.1-5+deb11u10`
bookworm	Fixed	`3.7.9-2+deb12u7`

Application impact

Vendor	Product	Versions
gnu	gnutls	`-`
redhat	hardened_images	`-`
redhat	openshift_container_platform	`4.0`

References

CWEs

CWE-626

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.