What is CVE-2024-23642?

CVE-2024-23642 is a medium-severity vulnerability in Geoserver, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2024-03-20.

How severe is CVE-2024-23642?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2024-23642 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Geoserver

CVE-2024-23642

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 2.23.4 and 2.24.1 that enables an authenticated administrator with workspace-level privileges to store a JavaScript payload in the GeoServer catalog that will execute in the context of another user's browser when viewed in the WMS GetMap SVG Output Format when the Simple SVG renderer is enabled. Access to the WMS SVG Format is available to all users by default although data and service security may limit users' ability to trigger the XSS. Versions 2.23.4 and 2.24.1 contain a fix for this issue.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-03-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (34.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Geoserver — versions = 2.24.0, 2.24.0, < 2.23.4

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

github.com/geoserver/geoserver/security/advisories/GHSA-fg9v-56hw-g525 (Vendor Advisory)
github.com/geoserver/geoserver/pull/7173 (Issue Tracking)
github.com/geoserver/geoserver/commit/1b1835afbb9c282d1840786259aeda81c1d22b00 (Patch)
github.com/geoserver/geoserver/commit/9f40265febb5939f23e2c53930c9c35e93970afe (Patch)
osgeo-org.atlassian.net/browse/GEOS-11152 (Issue Tracking)

Frequently asked questions

What is CVE-2024-23642?: CVE-2024-23642 is a medium-severity vulnerability in Geoserver, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2024-03-20.
How severe is CVE-2024-23642?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2024-23642 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.