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CVE-2023-43795 GeoServer

Affected softwareGeoServer
Severity9.8 Critical CVSS 3.1 2 scores
Fixed in2.22.5, 2.23.2
WeaknessServer-side request forgery (CWE-918)
Published25 Oct 2023
Updated17 Jun 2026

Description

GeoServer is an open source software server written in Java that allows users to share and edit geospatial data. The OGC Web Processing Service (WPS) specification is designed to process information from any server using GET and POST requests. This presents the opportunity for Server Side Request Forgery. This vulnerability has been patched in version 2.22.5 and 2.23.2.

Exploitation status

Exploited

Real-world exploitation reported by VulnCheck KEV. CISA has not confirmed it.

  • CISA KEV not listed
  • VulnCheck KEV listed Exploitation reported in the wild. Honeypot sightings · earliest 2024-07-22.
  • CISA Vulnrichment exploitation: none
  • Indexed PoC 1 indexed Published artifacts you can open, in Nuclei.
  • EPSS 69% chance in 30 days A model's forecast, not a report of exploitation. Higher than 99% of all scored CVEs.

VulnCheck KEV

Exploitation evidence from VulnCheck Known Exploited Vulnerabilities (VulnCheck KEV), used under VulnCheck's community terms. View CVE-2023-43795 in VulnCheck (free account).

EvidenceSourceDetailDate
Honeypot sighting Shadowserver honeypots Exploitation attempts seen on 521 days 2024-07-22 to 2026-11-12
IndexArtifactStarsFirst seen
Nuclei GeoServer WPS - Server Side Request Forgery

Waratek protection

Mitigation candidate

A kind of vulnerability Waratek's rules address, with exploit code published or exploitation reported. No rule exists and none is planned yet. The decision below says what we found to build a rule from.

  • Protection none
  • Action unverified
  • Review automated Inferred
  • Record active
Decided by A reference pointing at the upstream fix: a commit, a PR, a Red Hat bug
Finding A reference points at an upstream fix (advisory tier): https://github.com/geoserver/geoserver/security/advisories/GHSA-5pr3-m5hm-9956. That makes this CVE a candidate for an ARMR patch rule — it is the kind of defect ARMR can address, and there is a fix to work from. No rule exists and none is scheduled: writing one means reading the linked change and finding a hook point ARMR can express it at, which may turn out not to exist.
Candidate fix https://github.com/geoserver/geoserver/security/advisories/GHSA-5pr3-m5hm-9956 : the maintainers' own security advisory: names the version that fixes it, so the fix is the difference between two releases

CVSS

9.8 CRITICAL v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD Primary published
CVSS 3.1 8.6 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L security-advisories@github.com Secondary

Affected software and releases

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.geoserver.extension:gs-wps-core 0 2.22.5 unbounded
org.geoserver.extension:gs-wps-core 2.23.0 2.23.2 unbounded

Products and versions

2 products, 4 version entries
SourceVendorProductSchemeAffected versions
osv org.geoserver.extension gs-wps-core generic < 2.22.5 · ≥ 2.23.0 and < 2.23.2
nvd osgeo geoserver generic < 2.22.5 · ≥ 2.23.0 and < 2.23.2

References

URLTags
https://github.com/geoserver/geoserver/security/advisories/GHSA-5pr3-m5hm-9956 advisory
https://docs.geoserver.org/latest/en/user/security/urlchecks.html WEB
https://docs.geoserver.org/stable/en/user/services/wps/security.html#complex-inputs WEB
https://github.com/geoserver/geoserver PACKAGE

Timeline

Published2023-10-25By the CVE Program.
VulnCheck KEV: earliest evidence2024-07-22Date of the oldest evidence of exploitation in VulnCheck KEV's record. VulnCheck does not publish the date it listed the CVE.
NVD record modified2026-06-17NVD's own last-modified date for this record.
VulnCheck KEV: latest evidence2026-11-12Date of the newest report, exploit reference or honeypot sighting in VulnCheck KEV's record.