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Advisory record · GHSA-fg9v-56hw-g525

GeoServer's Simple SVG Renderer vulnerable to Stored Cross-Site Scripting (XSS)

CVSS 4.8 MediumEPSS 0.0043 · 37th percentile

Published by the GitHub Advisory Database at 20 Mar 2024, 15:08 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
org.geoserver:gs-wmsMaven<2.23.4 || >=2.24.0, <2.24.12.23.4, 2.24.1
Identifiers
GHSA-fg9v-56hw-g525 · CVE-2024-23642
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.

GeoServer's gs-wms (Maven org.geoserver:gs-wms) versions before 2.23.4 and from 2.24.0 before 2.24.1 are vulnerable to stored cross-site scripting in the WMS GetMap SVG output format when the Simple SVG renderer is enabled. An authenticated administrator with workspace-level privileges can store a JavaScript payload in the catalog that runs in another user's browser when that user views the output, which can let an attacker act as that user. Upgrade to gs-wms 2.23.4 or 2.24.1.

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 0.0043, the 37th 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.