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Advisory record · GHSA-pp4x-ccxq-6r33

Sulu: Stored XSS via media download inline-disposition override

CVSS 5.4 MediumEPSS 0.0030 · 22nd percentile

Published by the GitHub Advisory Database at 2 Sept 2026, 15:10 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
sulu/suluPackagist<2.6.25 || >=3.0.0-alpha1, <3.0.82.6.25, 3.0.8
Identifiers
GHSA-pp4x-ccxq-6r33 · CVE-2026-82396 · PKSA-nbbf-nf63-19vd
Weakness (CWE)
CWE-79
Tags
Published
2 Sept 2026
Updated
2 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Sulu is vulnerable to stored cross-site scripting in its media download endpoint in versions below 2.6.25 and from 3.0.0-alpha1 to before 3.0.8. An editor with permission to upload media can store an HTML file and share a link that runs JavaScript in the session of anyone who opens it, including administrators. Upgrade to 2.6.25 or 3.0.8, and until then restrict media upload to trusted users.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
5.4 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0030, the 22nd percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:06 UTC First seen by agentprime
  2. 31 Oct 2026, 14:06 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.