🛡️ CVE-2023-5540 — extra-packages-for-enterprise-linux

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: High — administrative rights are needed first.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: Low — limited, and the attacker does not choose what is affected.

Weakness class

CVE-2023-5540 is classified as CWE-94: Code Injection. Input is incorporated into code that the runtime evaluates, so an attacker can have their own code executed.

Affected software

CVE-2023-5540 is recorded against 4 packages.

• extra-packages-for-enterprise-linux
• fedora
• moodle
• moodle/moodle (fixed in 4.3.0-rc2)

Timeline and source

Published on 9 November 2023 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.moodle.org
bugzilla.redhat.com
moodle.org
git.moodle.org
bugzilla.redhat.com
moodle.org

Other advisories for this package

extra-packages-for-enterprise-linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2024-0232 (4.7 Medium, published 16 Jan 2024)
• CVE-2023-6395 (6.7 Medium, published 16 Jan 2024)
• CVE-2023-51766 (5.3 Medium, published 24 Dec 2023)
• CVE-2023-4256 (5.5 Medium, published 21 Dec 2023)
• CVE-2023-4255 (5.5 Medium, published 21 Dec 2023)
• CVE-2023-5764 (7.1 High, published 12 Dec 2023)
• CVE-2023-5341 (6.2 Medium, published 19 Nov 2023)
• CVE-2023-5548 (3.3 Low, published 9 Nov 2023)

Same weakness in other software

These advisories are the same class of weakness (CWE-94: Code Injection) in other software:

• CVE-2025-13146 (6.5 Medium, published 22 Jul 2026)
• CVE-2024-56373 (8.0 High, published 13 Jul 2026)
• CVE-2025-14287 (8.0 High, published 13 Jul 2026)
• CVE-2022-29216 (8.0 High, published 9 Jul 2026)
• CVE-2024-3924 (4.4 Medium, published 7 Jul 2026)
• CVE-2024-28397 (8.0 High, published 7 Jul 2026)
• CVE-2023-39660 (8.0 High, published 7 Jul 2026)
• CVE-2023-33733 (8.0 High, published 7 Jul 2026)

CVE-2023-5540 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Affected Packages

References