CVE-2024-53679: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache V

Routine

MEDIUM 5.4WATCHLISTUPGRADE

CVE-2024-53679 is a medium-severity flaw (CVSS 5.4) affecting vcl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache VCL in the User Lookup form. A user with sufficient rights to be able to view this part of the site can craft a URL or be tricked in to clicking a URL that will give a specified user elevated rights. This issue affects all versions of Apache VCL through 2.5.1. Users are recommended to upgrade to version 2.5.2, which fixes the issue.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-03-25
Last modified	2026-06-17

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-03-25 10:15 UTCPublished CVE record published
2026-06-17 08:09 UTCUpdated Record last modified

apache vcl UPGRADE

Affected: >= 2.1 and < 2.5.2

Fixed in: 2.5.2

Safe to downgrade to: a release before 2.1

1. Check installed version

apt-cache policy vcl || rpm -q vcl || vcl --version

2. UPGRADE to 2.5.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade vcl

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade vcl

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 2.1 (Debian / Ubuntu)

apt-cache madison vcl sudo apt install vcl=<VERSION_BEFORE_2.1> sudo apt-mark hold vcl

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list vcl sudo dnf downgrade vcl-<VERSION_BEFORE_2.1> sudo dnf versionlock add vcl

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-53679?

vcl: upgrade to 2.5.2. Exact commands for each OS are on this page.

Is CVE-2024-53679 being exploited?

CVE-2024-53679 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-53679 affect?

CVE-2024-53679 affects vcl. Severity is medium (CVSS 5.4). Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache VCL in the User Lookup form. A user with sufficient rights to be able to view this part of the site can craft a URL or be tricked i

How urgent is CVE-2024-53679?

Priority 35/100. On your watchlist

Related CVEs

CVE-2024-53678 HIGH 8.8 UPGRADE Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Apache V

References

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