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Low, CVSS 1.3

Snipe-IT's S3 signature image retrieval lacks authorization before temporary URL

CVE-2026-55542GHSA-6mmj-jhqj-6c6q

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (snipe/snipe-it 8.5.1), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
1.3 · 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/E:U · score source
EPSS
  • CVE-2026-55542: 0.28% estimated exploitation activity in the next 30 days; percentile 20.66 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

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

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-6mmj-jhqj-6c6q

Agent brief

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# Patch Next advisory brief: CVE-2026-55542

Advisory: Snipe-IT's S3 signature image retrieval lacks authorization before temporary URL
IDs: CVE-2026-55542, GHSA-6mmj-jhqj-6c6q
Record: https://patchnext.com/advisories/cve-2026-55542 (revision 1, source checked 26 Oct 2026, 14:49 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 1.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: snipe/snipe-it 8.5.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist snipe/snipe-it: affected <= 8.5.0; fixed in 8.5.1

## Suggested inspection (read-only)
- Packagist snipe/snipe-it: 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 snipe/snipe-it.
- 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-6mmj-jhqj-6c6q (GitHub-reviewed advisory GHSA-6mmj-jhqj-6c6q lists affected ranges: Packagist snipe/snipe-it >=0 <=8.5.0)

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