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🛡️ CVE-2025-24293 — activestorage

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-77 NVD
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Active Storage allowed transformation methods that were potentially unsafe

Active Storage attempts to prevent the use of potentially unsafe image transformation methods and parameters by default.

The default allowed list contains three methods allowing for the circumvention of the safe defaults which enables potential command injection vulnerabilities in cases where arbitrary user supplied input is accepted as valid transformation methods or parameters.

This has been assigned the CVE identifier CVE-2025-24293.

Versions Affected: >= 5.2.0

Not affected: < 5.2.0

Fixed Versions: 7.1.5.2, 7.2.2.2, 8.0.2.1

Impact

------

This vulnerability impacts applications that use Active Storage with the image_processing processing gem in addition to mini_magick as the image processor.

Vulnerable code will look something similar to this:

```

<%= image_tag blob.variant(params[:t] => params[:v]) %>

```

Where the transformation method or its arguments are untrusted arbitrary input.

All users running an affected release should either upgrade or use one of the workarounds immediately.

Releases

--------

The fixed releases are available at the normal locations.

Workarounds

-----------

Consuming user supplied input for image transformation methods or their parameters is unsupported behavior and should be considered dangerous.

Strict validation of user supplied methods and parameters should be performed as well as having a strong [ImageMagick security policy](https://imagemagick.org/script/security-policy.php) deployed.

Credits

-------

Thank you [lio346](https://hackerone.com/lio346) from Unit 515 of OPSWAT for reporting this!

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: High — total loss, or loss the attacker controls.
  • Integrity impact: High — total loss, or loss the attacker controls.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2025-24293 is classified as CWE-77: Command Injection. User input is placed into a command that the system interprets, allowing extra commands to be appended to the intended one.

Affected software

CVE-2025-24293 is recorded against 2 packages.

  • activestorage (from 5.2.0 up to 7.1.5.2)
  • unknown

Timeline and source

Published on 14 August 2025 and last revised on 31 January 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Advisory)
github.com (Package)
github.com (Web)

Other advisories for this package

activestorage has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-77: Command Injection) in other software:

CVE-2025-24293 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-77
Public Exploit ✅ No
Source NVD
Published 2025-08-14
Updated 2026-08-20
Modified 2026-01-31
Fix URL N/A

Affected Packages

Software From version Fixed in
activestorage 5.2.0 7.1.5.2
unknown — —

Similar Threats

Exploit Protection

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