CVE-2021-40822

mediumpriority · attend · 47EPSS 0.193 · 97 %ileexploit · PoCEUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

1 exploit · PoC

Likely / severe?

19.3% (97th) EPSS

CVSS 5 · medium

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

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

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · OSV

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimaryCWE-918US

exploits (1)

Public proof-of-concept and weaponised exploit code.

phor3nsic/CVE-2021-40822PoC and Dockerized vulnerable lab for CVE-2021-40822 (SSRF in GeoServer)PoC · poc_in_github

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
osgeo geoserver≤ 2.18.5nvdUScpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
osgeo geoserver2.19.0 → 2.19.3nvdUScpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
Maven org.geoserver:gs-main≤ 2.18.5osvUSpkg:maven/org.geoserver/gs-main
Maven org.geoserver:gs-main2.19.0 → 2.19.2osvUSpkg:maven/org.geoserver/gs-main

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-rr33-j5p5-ppf8GeoServer allows SSRF via the option for setting a proxy host2022-05-03ghsa · osvUS
GeoServer through 2.18.5 and 2.19.x through 2.19.2 allows SSRF via the option for setting a proxy host.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2022-05-02modified 2026-06-17

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+4180 more

references (13)

External citations — patches, advisories, analysis.

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