---
title: "CVE-2025-24293: Active Storage allowed transformation methods that were potentially unsafe"
url: https://erroneo.us/security/cve/CVE-2025-24293/
description: "CVE-2025-24293 (activestorage (RubyGems)): Active Storage allowed transformation methods potentially unsafe Active Storage attempts to prevent the use of…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-01-30
date_modified: 2026-07-15
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-24293"
kev: false
cvss: 9.2
epss: 0.05468
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-24293: Active Storage allowed transformation methods that were potentially unsafe

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 5.5% , percentile 93: FIRST’s model estimates a 5.5% chance of exploitation activity in the next 30 days, higher than 93% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes activestorage (RubyGems) >= 8.0, < 8.0.2.1, fixed in 8.0.2.1 ; activestorage (RubyGems) >= 7.2, < 7.2.2.2, fixed in 7.2.2.2 ; activestorage (RubyGems) >= 5.2.0, < 7.1.5.2, fixed in 7.1.5.2 . Check your lockfile, including transitive dependencies.

## What it is

Active Storage allowed transformation methods 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 allow 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. Impact ------ This vulnerability impacts applications that use Active Storage with the imageprocessing processing gem in addition to minimagick as the image processor. Vulnerable code will look something similar to this: 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. 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 deployed. Credits ------- Thank you lio346 for reporting this!

## Affected packages

- RubyGems `activestorage` >= 8.0, < 8.0.2.1 → fixed: 8.0.2.1
- RubyGems `activestorage` >= 7.2, < 7.2.2.2 → fixed: 7.2.2.2
- RubyGems `activestorage` >= 5.2.0, < 7.1.5.2 → fixed: 7.1.5.2

## Affected products (CVE record)

- Rails activestorage: 5.2 < 5.*, 7.0 < 7.1.5.2, 8.0 < 7.0.2.1

## Severity

- hackerone CVSS 4.0: 9.2 `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
- redhat-SADP CVSS 3.1: 8.1 `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub CVSS 4.0: 9.2 `CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 5.47% probability of exploitation activity in the next 30 days; percentile 93.

## Sources

- [GitHub Advisory GHSA-r4mg-4433-c7g3](https://github.com/advisories/GHSA-r4mg-4433-c7g3)
- [CVE.org record CVE-2025-24293](https://www.cve.org/CVERecord?id=CVE-2025-24293)
- [NVD entry CVE-2025-24293](https://nvd.nist.gov/vuln/detail/CVE-2025-24293)
- [access.redhat.com](https://access.redhat.com/security/cve/CVE-2025-24293)
- [RHBZ#2435565](https://bugzilla.redhat.com/show_bug.cgi?id=2435565)
- [security.access.redhat.com](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-24293.json)
- [github.com](https://github.com/rails/rails/security/advisories/GHSA-r4mg-4433-c7g3)
- [github.com](https://github.com/rails/rails/commit/1b1adf6ee6ca0f3104fcfce79360b2ec1e06a354)
- [github.com](https://github.com/rails/rails/commit/2d612735ac0d9712fdfffaf80afa627e7295f6ce)
- [github.com](https://github.com/rails/rails/commit/fb8f3a18c3d97524c0efc29150d1e5f3162fbb13)
- [github.com](https://github.com/rubysec/ruby-advisory-db/blob/master/gems/activestorage/CVE-2025-24293.yml)

---
Source page: https://erroneo.us/security/cve/CVE-2025-24293/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt