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CVE-2021-40822

46
FAUCET Score

CVE-2021-40822 is a Server-Side Request Forgery (SSRF) vulnerability affecting GeoServer versions through 2.18.5 and 2.19.x through 2.19.2, allowing attackers to manipulate the proxy host setting. This vulnerability carries a high CVSS score of 7.5, indicating a network-exploitable flaw with low attack complexity and high confidentiality impact, requiring no user interaction or privileges. While there is no evidence of active exploitation or public exploit code like Metasploit or ExploitDB entries, a Nuclei template exists, and its high EPSS score suggests a significant likelihood of future exploitation. Community discussion and media coverage for this CVE are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.18.5CPE matchmatch criteria
cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*
>= 2.19.0, < 2.19.3CPE matchmatch criteria
cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
19.76%
Probability of exploitation in next 30 days
EPSS Percentile
97.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Nuclei: CVE-2021-40822 · May 18, 2022
This CVE's current EPSS score of 0.1976 is in the 96th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-rr33-j5p5-ppf8high

GeoServer allows SSRF via the option for setting a proxy host

May 3, 2022

References

github.com / geoserver/geoserver/compare/2.19.2...2.19.3
PatchRelease NotesThird Party Advisory
github.com / geoserver/geoserver/releases
Release NotesThird Party Advisory
osgeo-org.atlassian.net / browse/GEOS-10229
Issue TrackingVendor Advisory
osgeo-org.atlassian.net / browse/GEOS-10229
Issue TrackingVendor Advisory