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CVE Record

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.

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

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

GeoServer versions through 2.18.5 and 2.19.x through 2.19.2 could allow server-side request forgery through proxy host configuration. In business terms, a vulnerable GeoServer may be tricked into making network requests it should not make, potentially exposing internal services or cloud metadata depending on deployment network access.

Executive priority

Prioritize if GeoServer is internet-facing, handles sensitive GIS data, or has broad internal network reach. Without active exploitation evidence or CVSS in the bundle, this is not automatically critical, but SSRF can become serious in permissive network environments.

Technical view

The CVE describes an SSRF issue in GeoServer tied to the option for setting a proxy host. The provided sources identify affected version ranges and reference GeoServer release and comparison material, but do not provide CVSS, CWE, exploit details, or complete mitigation text in the bundle.

Likely exposure

Exposure is most relevant where affected GeoServer instances are reachable by users who can influence proxy host settings. Risk increases if the server can reach internal-only services, management interfaces, or sensitive cloud endpoints.

Exploitation context

The bundle does not show CISA KEV listing or cite active exploitation. Treat exploitation status as unconfirmed. The practical impact depends on configuration access, network egress paths, and internal services reachable from the GeoServer host.

Researcher notes

Evidence is limited to a concise CVE description and vendor-adjacent references. Do not assume exploit availability. Focus review on proxy host handling, authorization around configuration changes, and whether the 2.19.3 comparison contains the relevant fix path.

Mitigation direction

  • Identify GeoServer versions across production and internet-facing environments.
  • Upgrade affected deployments beyond GeoServer 2.18.5 and 2.19.2 using vendor release guidance.
  • Restrict who can change proxy host configuration.
  • Limit GeoServer egress to approved destinations where feasible.
  • Review vendor issue GEOS-10229 before change approval.

Validation and detection

  • Confirm deployed GeoServer versions and compare against affected ranges.
  • Review configuration access controls for proxy host settings.
  • Check network controls limiting GeoServer outbound access.
  • Look for unexpected outbound requests from GeoServer hosts.
  • Verify upgrade status against GeoServer release notes.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

description · low confidence lookup

Cloud metadata behavior lookup

The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-40822 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.