Craft CMS: save_images_Asset graphql mutation can be abused to exfiltrate AWS credentials of underlying host

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-25492: 0.47% estimated exploitation activity in the next 30 days; percentile 40.88 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary - The saveimagesAsset graphql mutation allows a user to give a url of an image to download. (Url must use a domain, not a raw IP.) - Attacker sets up domain attacker.domain with an A record of something like 169.254.169.254 (special AWS metadata IP) - Attacker invokes saveimagesAsset with url: http://attacker.domain/latest/meta-data/iam/security-credentials and filename "foo.txt" - Craft fetches sensitive information on attacker's behalf, and makes it available for download at /assets/images/foo.txt - Normal checks to verify that image is valid are bypassed because of .txt extension - Normal checks to verify that url is not an IP address are bypassed because user provided a valid domain that resolves to a sensitive internal IP address Details handleUpload() in src/gql/resolvers/mutations/Assets.php contains the code that processes the saveimagesAsset mutation. It has some basic validation logic for the url parameter (source of the image) and filename parameter (what to save…

Published by the source

9 Feb 2026, 20:35 UTC

Last modified by the source

9 Feb 2026, 22:38 UTC

Source last checked

26 Oct 2026, 14:38 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-96pq-hxpw-rgh8

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# Patch Next advisory brief: CVE-2026-25492

Advisory: Craft CMS: save_images_Asset graphql mutation can be abused to exfiltrate AWS credentials of underlying host
IDs: CVE-2026-25492, GHSA-96pq-hxpw-rgh8
Record: https://patchnext.com/advisories/cve-2026-25492 (revision 1, source checked 26 Oct 2026, 14:38 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 5.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: craftcms/craft 5.8.22, 4.16.18. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist craftcms/craft: affected >= 5.0.0-RC1, <= 5.8.21; >= 3.5.0, <= 4.16.17; fixed in 5.8.22, 4.16.18

## Suggested inspection (read-only)
- Packagist craftcms/craft: 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 craftcms/craft.
- 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-96pq-hxpw-rgh8 (GitHub-reviewed advisory GHSA-96pq-hxpw-rgh8 lists affected ranges: Packagist craftcms/craft >=5.0.0-RC1 =3.5.0 <=4.16.17)

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