Debian dla-4541 : opam - security update

high Nessus Plugin ID 307900

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4541 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-4541-1 [email protected] https://www.debian.org/lts/security/ Emilio Pozuelo Monfort April 21, 2026 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : opam Version : 2.0.8-1+deb11u1 CVE ID : CVE-2026-41082

Andrew Nesbitt discovered that .install file directives were insufficiently restricted in OPAM, a package manager for OCaml. This could result in directory traversal out of the package area.

For Debian 11 bullseye, this problem has been fixed in version 2.0.8-1+deb11u1.

We recommend that you upgrade your opam packages.

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

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

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

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

Solution

Upgrade the opam packages.

Plugin Details

Severity: High

ID: 307900

File Name: debian_DLA-4541.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 4/21/2026

Updated: 4/21/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.7

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2026-41082

CVSS v3

Risk Factor: High

Base Score: 7.3

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:opam, p-cpe:/a:debian:debian_linux:opam-doc, p-cpe:/a:debian:debian_linux:opam-installer

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/21/2026

Vulnerability Publication Date: 4/16/2026

Reference Information

CVE: CVE-2026-41082

Detections

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