CVE-2021-40822 — GeoServer allows SSRF via the option for setting a proxy host

Description

GeoServer through 2.18.5 and 2.19.x through 2.19.2 allows SSRF via the option for setting a proxy host.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

phor3nsic/CVE-2021-40822 ★ 2 · May 17, 2022

PoC and Dockerized vulnerable lab for CVE-2021-40822 (SSRF in GeoServer)

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Automated scanner template

A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.

Geoserver - Server-Side Request Forgery http/cves/2021/CVE-2021-40822.yaml

Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.

Affected packages

Ecosystem	Package	Affected	Fixed	Record
Maven	org.geoserver:gs-main	<= 2.18.5	—	GHSA-rr33-j5p5-ppf8
Maven	org.geoserver:gs-main	>= 2.19.0, <= 2.19.2	—	GHSA-rr33-j5p5-ppf8