CVE-2026-76904: GeoTools has unauthenticated SQL injection in the jsonArrayContains filter function against PostGIS layers

Should you act?

Critical and remotely reachable

No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
• EPSS 4.0%, percentile 90: FIRST’s model estimates a 4.0% chance of exploitation activity in the next 30 days, higher than 90% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
• Only applies if your dependency tree includes org.geotools.jdbc:gt-jdbc-postgis (Maven) = 35.0, fixed in 35.1; org.geotools.jdbc:gt-jdbc-postgis (Maven) >= 34.0, < 34.5, fixed in 34.5; org.geotools.jdbc:gt-jdbc-postgis (Maven) >= 30.5, < 33.6, fixed in 33.6. Check your lockfile, including transitive dependencies.

What it is

GeoTools is an open source Java library that provides tools for geospatial data. Starting in version 30.5 and prior to versions 33.6, 34.5, and 33.6, an SQL Injection Vulnerability is present when executing OGC Filters with PostGIS DataStore implementation: jsonArrayContains function; Requires PostGIS 12 or greater with a String or JSON field. For PostGIS 12 and greater jsonArrayContains( , , ) function writes into generated SQL without escaping. Patches are available in versions 33.6, 34.5, and 33.6. No known workaround is available. To limit scope of SQL Injection the PostGIS connection pool should be configured with limited rights.

From the GitHub advisory

Summary

An SQL Injection Vulnerability has been found when executing OGC Filters with PostGIS DataStore implementation:

jsonArrayContains function Requires PostGIS 12 or greater with a String or JSON field

For PostGIS 12 and greater jsonArrayContains( , , ) function writes into generated SQL without escaping.

Patches

Weakness type: CWE-89.

Product: org.geotools.jdbc:gt-jdbc-postgis (Maven) · Assigned by: GitHub_M · Published: 2026-08-21

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: low
• Privileges required: none (no login)
• User interaction: none
• Scope: unchanged

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
• CISA SSVC assessment: exploitation none, automatable yes, technical impact total.
• FIRST EPSS (model of 2026-10-21): 3.98% probability of exploitation activity in the next 30 days; percentile 90.

Timeline

• 2026-08-21 — CVE record published by GitHub_M
• 2026-08-21 — GitHub-reviewed advisory GHSA-mqjf-5f49-2fjh published (critical)
• 2026-08-27 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vulnerability records

1. GitHub Advisory GHSA-mqjf-5f49-2fjh github.com
2. CVE.org record CVE-2026-76904 cve.org
3. NVD entry CVE-2026-76904 nvd.nist.gov

Other references from the CVE record and advisory

1. github.com github.com
2. github.com github.com
3. github.com github.com
4. github.com github.com
5. github.com github.com
6. github.com github.com
7. osgeo-org.atlassian.net osgeo-org.atlassian.net
8. osgeo-org.atlassian.net osgeo-org.atlassian.net
9. osgeo-org.atlassian.net osgeo-org.atlassian.net

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