Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
GeoServer's gs-gwc-rest (Maven org.geoserver:gs-gwc-rest) versions before 2.23.2 and from 2.24.0 before 2.24.1 are affected by a stored cross-site scripting flaw in the GWC Seed Form. An authenticated administrator with workspace-level privileges can store a JavaScript payload that runs in another administrator's browser when they view the form, allowing actions taken as that user. Upgrade to version 2.23.2 or 2.24.1. Access to the form is limited to full administrators by default, so keeping it that way reduces exposure.
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
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 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
- 31 Oct 2026, 14:18 UTC First seen by agentprime
- 31 Oct 2026, 14:18 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-56r3-f536-5gf7
- OSV: GHSA-56r3-f536-5gf7
- github.com/geoserver/geoserver/security/advisories/GHSA-56r3-f536-5gf7
- nvd.nist.gov/vuln/detail/CVE-2024-23643
- github.com/GeoWebCache/geowebcache/issues/1172
- github.com/GeoWebCache/geowebcache/pull/1174
- github.com/GeoWebCache/geowebcache/commit/9d010e09c784690ada8af43f594461a2553a62f0
- github.com/GeoWebCache/geowebcache/commit/c0ca08a20bc0e66dafbdb083f7508b372c0703ee
- github.com/geoserver/geoserver