CVE-2026-1776: Camaleon CMS versions 2.4.5.0 through 2.9.0, prior to commit f54a77e, contain a path traversal vulnerability i

Routine

MEDIUM 6.5UPGRADE

CVE-2026-1776 is a medium-severity flaw (CVSS 6.5) affecting camaleon cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Camaleon CMS versions 2.4.5.0 through 2.9.0, prior to commit f54a77e, contain a path traversal vulnerability in the AWS S3 uploader implementation that allows authenticated users to read arbitrary files from the web server’s filesystem. The issue occurs in the download_private_file functionality when the application is configured to use the CamaleonCmsAwsUploader backend. Unlike the local uploader implementation, the AWS uploader does not validat

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.8% (top 44%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-10
Last modified	2026-10-08

Publisher (CNA): VulnCheck · Vendor: tuzitio

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-10 07:38 UTCPublished CVE record published
2026-10-08 16:17 UTCUpdated Record last modified

tuzitio camaleon cms UPGRADE

Affected: >= 2.4.5 and <= 2.9.0

Fixed in: newer than 2.9.0

Safe to downgrade to: a release before 2.4.5

1. Check installed version

apt-cache policy camaleon-cms || rpm -q camaleon-cms || camaleon-cms --version

2. UPGRADE to newer than 2.9.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade camaleon-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade camaleon-cms

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 2.4.5 (Debian / Ubuntu)

apt-cache madison camaleon-cms sudo apt install camaleon-cms=<VERSION_BEFORE_2.4.5> sudo apt-mark hold camaleon-cms

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

dnf --showduplicates list camaleon-cms sudo dnf downgrade camaleon-cms-<VERSION_BEFORE_2.4.5> sudo dnf versionlock add camaleon-cms

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-2026-1776?

camaleon cms: upgrade to newer than 2.9.0. Exact commands for each OS are on this page.

Is CVE-2026-1776 being exploited?

CVE-2026-1776 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-2026-1776 affect?

CVE-2026-1776 affects camaleon cms. Severity is medium (CVSS 6.5). Camaleon CMS versions 2.4.5.0 through 2.9.0, prior to commit f54a77e, contain a path traversal vulnerability in the AWS S3 uploader implementation that allows authenticated users to read arbitrary files from the web server’s filesystem. The

How urgent is CVE-2026-1776?

Priority 37/100. No elevated risk signals yet.

Software pages

AWS vulnerabilities

Related CVEs

CVE-2024-46987 HIGH 7.7 UPGRADE Camaleon CMS is a dynamic and advanced content management system based on Ruby on Rails
CVE-2024-46986 CRITICAL 9.9 UPGRADE Camaleon CMS is a dynamic and advanced content management system based on Ruby on Rails
CVE-2023-53936 MEDIUM 4.8 DOWNGRADE Cameleon CMS 2.7.4 contains a persistent cross-site scripting vulnerability that allows authenticated administ

References

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