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MEDIUM severity

Camaleon CMS Stored Cross-site Scripting vulnerabilityGHSA-x78v-4fvj-rg9j

MEDIUMFix: owen2345/camaleon-cms@05506e9

GHSA-x78v-4fvj-rg9j is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in camaleon_cms. A fix is available for camaleon_cms — see the affected versions and patch details below.

Also known asCVE-2021-25969
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for GHSA-x78v-4fvj-rg9j.

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs57th percentile — riskier than 57% of all scored CVEsHighest risk
0.28%0.85%1.41%1.97%1.5%0.8%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
💎camaleon_cms

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

In “Camaleon CMS” application, versions 0.0.1 through 2.6.0 are vulnerable to stored XSS, that allows unprivileged application users to store malicious scripts in the comments section of the post. These scripts are executed in a victim’s browser when they open the page containing the malicious comment.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
💎RubyGemscamaleon_cms≥ 0.0.1&&< 2.6.0.12.6.0.1bundle update camaleon_cms --conservative

Affected Products

1 product · 1 configurations
Application
camaleon cmstuzitio
≥ 0.0.1 && ≤ 2.6.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for camaleon_cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update camaleon_cms to 2.6.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x78v-4fvj-rg9j is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

In “Camaleon CMS” application, versions 0.0.1 through 2.6.0 are vulnerable to stored XSS, that allows unprivileged application users to store malicious scripts in the comments section of the post. These scripts are executed in a victim’s browser when they open the page containing the malicious comment.
O3 Security · Impact-Aware SCA

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Camaleon CMS Stored Cross-site Scripting vulnerability