CVE-2021-40822

HIGHNVD 7.57.5—Elevated

7.5

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

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 99.8%
KEV: Not listed

Published

May 2, 2022

Last Modified

November 21, 2024

References (8)

cve@mitrehttps://github.com/geoserver/geoserver/compare/2.19.2...2.19.3
cve@mitrehttps://github.com/geoserver/geoserver/releases
cve@mitrehttps://osgeo-org.atlassian.net/browse/GEOS-10229
cve@mitrehttps://osgeo-org.atlassian.net/browse/GEOS-10229?focusedCommentId=83508
af854a3a-2127-422b-91ae-364da2661108https://github.com/geoserver/geoserver/compare/2.19.2...2.19.3
af854a3a-2127-422b-91ae-364da2661108https://github.com/geoserver/geoserver/releases
af854a3a-2127-422b-91ae-364da2661108https://osgeo-org.atlassian.net/browse/GEOS-10229
af854a3a-2127-422b-91ae-364da2661108https://osgeo-org.atlassian.net/browse/GEOS-10229?focusedCommentId=83508

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
maven	org.geoserver:gs-main	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Maven(1)

Package	Vulnerable range	Fixed in	Dependents
org.geoserver:gs-main	—	—	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-918Server-Side Request Forgery (SSRF)

Data Freshness Timeline

(refreshed 2× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-23 08:53 UTCEG score recompute
2026-05-23 08:53 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCphor3nsic/CVE-2021-40822
First seen May 17, 2022
Open source ↗
Nucleihttp/cves/2021/CVE-2021-40822.yaml
First seen Jan 1, 2021
Geoserver - Server-Side Request Forgery
Open source ↗

Frequently asked(5)

What is CVE-2021-40822?

CVE-2021-40822 is a high vulnerability published on May 2, 2022. GeoServer through 2.18.5 and 2.19.x through 2.19.2 allows SSRF via the option for setting a proxy host.

When was CVE-2021-40822 disclosed?

CVE-2021-40822 was first published in the National Vulnerability Database on May 2, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-40822 actively exploited?

CVE-2021-40822 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-40822?

CVE-2021-40822 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2021-40822?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-40822, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-40822

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CVE-2021-40822

Published

Last Modified

References (8)

Patch Availability(1)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-40822?

Same product

Same CWE

CVE-2021-40822

📅 Published

🔄 Last Modified

🔗 References (8)

Patch Availability(1)

Affected Packages

Weakness Classification(1)

Data Freshness Timeline

Publicly available exploits

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-40822?

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References (8)

Frequently asked(5)

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