MariaDB Connector/J: XA recover() trusted server-supplied gtrid and bqual lengths

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

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

EPSS

• CVE-2026-119280: 0.31% estimated exploitation activity in the next 30 days; percentile 23.44 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary `XAResource.recover()` in MariaDB Connector/J trusted the `gtrid_length` and `bqual_length` columns returned by `XA RECOVER` to allocate and split each Xid.

Details `MariaDbPoolConnection` and `MariaDbPoolPinnedConnection` built each `Xid` of the recovery list by allocating `new byte[gtrid_length]` and `new byte[bqual_length]` and copying from the `data` column, without validating the lengths against the XA specification bounds (`Xid.MAXGTRIDSIZE`, `Xid.MAXBQUALSIZE`) or the actual payload. Negative or oversized lengths, or lengths that do not fit the data, ended in large allocations or unchecked exceptions (`NegativeArraySizeException`, `ArrayIndexOutOfBoundsException`) during recovery. The fix validates the lengths before any allocation or copy and reports an invalid row as an `XAException` (`XAER_RMFAIL`).

Impact Availability only, and limited to applications running XA recovery: a malicious or compromised server, or a MitM, can crash the recovery or drive large…

Published by the source

30 Oct 2026, 23:00 UTC

Last modified by the source

30 Oct 2026, 23:15 UTC

Source last checked

31 Oct 2026, 07:05 UTC

1. Revision 2 · amended · 31 Oct 2026

   Amended from osv record GHSA-4jq2-8v3c-97w8

2. Revision 1 · created · 30 Oct 2026

   Published from ghsa record GHSA-4jq2-8v3c-97w8

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# Patch Next advisory brief: CVE-2026-119280

Advisory: MariaDB Connector/J: XA recover() trusted server-supplied gtrid and bqual lengths
IDs: CVE-2026-119280, GHSA-4jq2-8v3c-97w8
Record: https://patchnext.com/advisories/cve-2026-119280 (revision 2, source checked 31 Oct 2026, 07:05 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.mariadb.jdbc:mariadb-java-client 3.5.11, 3.4.5, 3.3.7. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.mariadb.jdbc:mariadb-java-client: affected >= 3.0.0, < 3.3.7; >= 3.4.0, < 3.4.5; >= 3.5.0, < 3.5.11; fixed in 3.5.11, 3.3.7, 3.4.5

## Suggested inspection (read-only)
- Maven org.mariadb.jdbc:mariadb-java-client: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.mariadb.jdbc:mariadb-java-client.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-4jq2-8v3c-97w8 (GitHub-reviewed advisory GHSA-4jq2-8v3c-97w8 lists affected ranges: Maven org.mariadb.jdbc:mariadb-java-client >=3.0.0 =3.4.0 =3.5.0 <3.5.11)
- Verified: https://osv.dev/vulnerability/GHSA-4jq2-8v3c-97w8 (OSV record GHSA-4jq2-8v3c-97w8 lists affected ranges: Maven org.mariadb.jdbc:mariadb-java-client >=3.0.0 =3.4.0 =3.5.0 <3.5.11 (fixed))

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