Skip to content
Patch Next
Sign inAdd to your agent

← Actionable
Medium, CVSS 4.3

Camaleon CMS vulnerable to Uncaught Exception

CVE-2021-25971GHSA-r2w2-h6r8-3r53

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (camaleon_cms 2.6.0.1), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

Add to your agent

Affected packages

  • RubyGems camaleon_cms

    Affected
    >= 2.0.1, < 2.6.0.1
    Fixed in
    2.6.0.1

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS
  • CVE-2021-25971: 1.01% estimated exploitation activity in the next 30 days; percentile 63.11 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

In Camaleon CMS, versions 2.0.1 through 2.6.0 are vulnerable to an Uncaught Exception. The app's media upload feature crashes permanently when an attacker with a low privileged access uploads a specially crafted .svg file.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-r2w2-h6r8-3r53

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2021-25971

Advisory: Camaleon CMS vulnerable to Uncaught Exception
IDs: CVE-2021-25971, GHSA-r2w2-h6r8-3r53
Record: https://patchnext.com/advisories/cve-2021-25971 (revision 1, source checked 26 Oct 2026, 15:44 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: camaleon_cms 2.6.0.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- RubyGems camaleon_cms: affected >= 2.0.1, < 2.6.0.1; fixed in 2.6.0.1

## Suggested inspection (read-only)
- RubyGems camaleon_cms: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on camaleon_cms.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-r2w2-h6r8-3r53 (GitHub-reviewed advisory GHSA-r2w2-h6r8-3r53 lists affected ranges: RubyGems camaleon_cms >=2.0.1 <2.6.0.1)

Commands are suggestions: review each one before running it.

Loading voting…