Debian dsa-6558 : curl - security update

critical Nessus Plugin ID 365528

Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6558 advisory.

- ------------------------------------------------------------------------- Debian Security Advisory DSA-6558-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso October 14, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : curl CVE ID : CVE-2026-92392

It was discovered that the cURL URL transfer library, is prone to a use-after-free vulnerability when handling a HTTP/2 RST_STREAM received by a server during an upload, which could result in remote code execution.

For the stable distribution (trixie), this problem has been fixed in version 8.14.1-2+deb13u7. The update additionally contains fixes for CVE-2026-8286, CVE-2026-8924 and CVE-2026-8927 which were planned to be released with the trixie 13.8 point release.

We recommend that you upgrade your curl packages.

For the detailed security status of curl please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/curl

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: [email protected]

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the curl packages.

Plugin Details

Severity: Critical

ID: 365528

File Name: debian_DSA-6558.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 10/14/2026

Updated: 10/14/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.47

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2026-8927

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:curl, p-cpe:/a:debian:debian_linux:libcurl3t64-gnutls, p-cpe:/a:debian:debian_linux:libcurl4-doc, p-cpe:/a:debian:debian_linux:libcurl4-gnutls-dev, p-cpe:/a:debian:debian_linux:libcurl4-openssl-dev, p-cpe:/a:debian:debian_linux:libcurl4t64

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/14/2026

Vulnerability Publication Date: 6/25/2026

Reference Information

CVE: CVE-2026-8286, CVE-2026-8924, CVE-2026-8927, CVE-2026-92392

IAVA: 2026-A-0627-S

Detections

Analytics