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Advisory record · GHSA-88wc-fcj9-q3r9

GeoServer's GWC Demos Page vulnerable to Stored Cross-Site Scripting (XSS)

CVSS 4.8 MediumEPSS 0.0040 · 35th percentile

Published by the GitHub Advisory Database at 20 Mar 2024, 15:18 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.geoserver:gs-gwcMaven>=2.24.0, <2.24.1 || <2.23.42.24.1, 2.23.4
Identifiers
GHSA-88wc-fcj9-q3r9 · CVE-2024-23821
Weakness (CWE)
CWE-79
Tags
Published
20 Mar 2024
Updated
10 Sept 2026

Machine-written summary

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

Versions of the org.geoserver:gs-gwc Maven package from 2.23.0 up to but not including 2.23.4, and from 2.24.0 up to but not including 2.24.1, are affected. An authenticated administrator with workspace-level privileges can store a JavaScript payload in the GeoServer catalog that runs in another user's browser when they view the GWC Demos Page, which is open to all users. Upgrade to version 2.24.1 or 2.23.4.

Written 2 Nov 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
4.8 Medium 3.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0040, the 35th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:18 UTC First seen by agentprime
  2. 31 Oct 2026, 14:18 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.