CVE-2026-55542: Snipe-IT's S3 signature image retrieval lacks authorization before temporary URL
Impact Snipe-IT S3 signature image retrieval lacks authorization before temporary URL.
On S3-backed deployments, authenticated users who know a signature filename can obtain a 5-minute signed S3 URL because the S3 branch returns before the authorize() call used by the local-file branch.
Key evidence routes/web.php:135-143; app/Http/Controllers/ActionlogController.php:16-44; app/Http/Controllers/Account/AcceptanceController.php:160,175; app/Listeners/LogListener.php:56; app/Http/Transformers/ActionlogsTransformer.php:188
Patches Patched in https://github.com/grokability/snipe-it/commit/ded6515cbc27a28f07395da318483c2e96263259
Credit Disclosed by Ikaro tiagonas
Other sources
Snipe-IT is an IT asset/license management system. Prior to version 8.6.1, Snipe-IT S3 signature image retrieval lacks authorization before temporary URL. On S3-backed deployments, authenticated users who know a signature filename can obtain a 5-minute signed S3 URL because the S3 branch returns before the authorize() call used by the local-file branch. Version 8.6.1 contains a patch.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
composer/snipe/snipe-itto a version that resolves this vulnerability.Fixed in 8.5.1 - Upgrade
Upgrade
Snipe-ITto a version that resolves this vulnerability.Fixed in 8.6.1Patch ded6515cbc27a28f07395da318483c2e96263259
Event History
Frequently Asked Questions
What is the severity of CVE-2026-55542?
The severity of CVE-2026-55542 is rated at risk level 26.
How do I fix CVE-2026-55542?
To fix CVE-2026-55542, you need to implement proper authorization checks before generating signed S3 URLs.
What software is affected by CVE-2026-55542?
CVE-2026-55542 affects the Snipe-IT software, specifically in its S3 signature image retrieval functionality.
Who can exploit CVE-2026-55542?
Authenticated users who know a signature filename can exploit CVE-2026-55542 to obtain a signed S3 URL.
What is the primary impact of CVE-2026-55542?
The primary impact of CVE-2026-55542 is unauthorized access to S3-backed images due to the lack of authorization before URL generation.