How severe is CVE-2021-40822?

CVE-2021-40822 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40822 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40822?

CVE-2021-40822 affects Osgeo Geoserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40822?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40822 published?

CVE-2021-40822 was published on 2022-05-02 and last updated on 2026-06-17.

CVE-2021-40822

CVE-2021-40822 is a high-severity vulnerability in Osgeo Geoserver with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Osgeo Geoserver
Published: 2022-05-02
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-40822?: GeoServer through 2.18.5 and 2.19.x through 2.19.2 allows SSRF via the option for setting a proxy host.
How severe is CVE-2021-40822?: CVE-2021-40822 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40822 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40822?: CVE-2021-40822 affects Osgeo Geoserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40822?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40822 published?: CVE-2021-40822 was published on 2022-05-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:osgeo:geoserver:*:*:*:*:*:*:*:*

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