Integer truncation in MariaDB Connector/J length parsing
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 9 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-190 and the CVSS impact.
Summary
MariaDB Connector/J from 3.0.0 before 3.3.7, from 3.4.0 before 3.4.5, and from 3.5.0 before 3.5.10 is affected. Length-encoded integers above Integer.MAX_VALUE are narrowed to a Java int without a range check, so large values wrap to negative or wrong lengths (CWE-190). A malicious or compromised server, or a machine-in-the-middle attacker, can cause NegativeArraySizeException, out-of-bounds failures, or oversized allocations during client connection handling.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.10, the ReadableByteBuf.readLength() and ReadableByteBuf.readIntLengthEncodedNotNull() methods narrowed the protocol's unsigned 8-byte length-encoded integer to a Java int without checking that the value fit a non-negative integer. Values above Integer.MAX_VALUE could wrap to a negative or unrelated length that downstream allocation and read paths used. A malicious or compromised server, or a machine-in-the-middle attacker, could trigger NegativeArraySizeException, out-of-bounds failures, or oversized allocation behavior in client connection handling. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.10.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MariaDB | mariadb-connector-j | 3.0.0 to before 3.3.7; 3.4.0 to before 3.4.5; 3.5.0 to before 3.5.10 | 3.3.7, 3.4.5, 3.5.10 | Patch available | CNA |
| — | org.mariadb.jdbc:mariadb-java-client (Maven) | 3.0.0 to before 3.3.7 | 3.3.7 | Patch available | GHSA-797x-p4mc-jwpm |
| — | org.mariadb.jdbc:mariadb-java-client (Maven) | 3.4.0 to before 3.4.5 | 3.4.5 | Patch available | GHSA-797x-p4mc-jwpm |
| — | org.mariadb.jdbc:mariadb-java-client (Maven) | 3.5.0 to before 3.5.10 | 3.5.10 | Patch available | GHSA-797x-p4mc-jwpm |
- mariadb-connector-j VendorMariaDB Affected 3.0.0 to before 3.3.7; 3.4.0 to before 3.4.5; 3.5.0 to before 3.5.10 Fixed in 3.3.7, 3.4.5, 3.5.10 Patch available CNA
- org.mariadb.jdbc:mariadb-java-client (Maven) Vendor— Affected 3.0.0 to before 3.3.7 Fixed in 3.3.7 Patch available GHSA-797x-p4mc-jwpm
- org.mariadb.jdbc:mariadb-java-client (Maven) Vendor— Affected 3.4.0 to before 3.4.5 Fixed in 3.4.5 Patch available GHSA-797x-p4mc-jwpm
- org.mariadb.jdbc:mariadb-java-client (Maven) Vendor— Affected 3.5.0 to before 3.5.10 Fixed in 3.5.10 Patch available GHSA-797x-p4mc-jwpm
Remediation
Upgrade the mariadb-connector-j product to 3.3.7, 3.4.5, or 3.5.10, including the Maven package org.mariadb.jdbc:mariadb-java-client. Red Hat lists its plan as none available for Red Hat Build of Keycloak, Red Hat Enterprise Linux 8, 9, and 10, Red Hat OpenShift AI (RHOAI), Red Hat Satellite 6, Red Hat build of Debezium 3, and Red Hat build of Quarkus, and as no fix planned for Red Hat OpenStack Platform 13 (Queens).
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA mariadb-connector-j (mariadb-corporation) Fixed in 3.3.7, 3.4.5, 3.5.10
- Fix · GHSA-797x-p4mc-jwpm org.mariadb.jdbc:mariadb-java-client (Maven) Fixed in 3.3.7 Advisory →
- Fix · GHSA-797x-p4mc-jwpm org.mariadb.jdbc:mariadb-java-client (Maven) Fixed in 3.4.5 Advisory →
- Fix · GHSA-797x-p4mc-jwpm org.mariadb.jdbc:mariadb-java-client (Maven) Fixed in 3.5.10 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Build of Keycloak | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Out of support scope |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
| Red Hat build of Debezium 3 | Affected | No fix yet: Fix deferred |
| Red Hat build of Quarkus | Affected | No fix yet |
Not affected: 1 product
- Red Hat Hardened Images
Timeline
- 2026-10-29 Threatist record created from CVE-2026-119279
- 2026-10-30 Alias added: GHSA-797x-p4mc-jwpm
- 2026-10-30 Fix available: Maven/org.mariadb.jdbc:[email protected], Maven/org.mariadb.jdbc:[email protected], Maven/org.mariadb.jdbc:[email protected] · GHSA-797x-p4mc-jwpm
- 2026-10-30 CVSS score added · GHSA-797x-p4mc-jwpm
- 2026-10-30 Weakness changed · GHSA-797x-p4mc-jwpm
- 2026-10-30 9 new references · GHSA-797x-p4mc-jwpm
- 2026-10-31 Priority changed: MEDIUM → LOW
- 2026-11-02 Affected versions changed · Red Hat
- 2026-11-02 CVSS score added · Red Hat
- 2026-11-03 Affected versions changed · Red Hat
- 2026-11-03 CISA SSVC decision points changed
References
Other 8
- https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/GHSA-797x-p4mc-jwpm
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/30d4a883377a9b7762e02ee2c60d54567032ab99
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/bfd9f5ad666a6f7f5401a5b78f2ac2fbd6df8667
- https://github.com/mariadb-corporation/mariadb-connector-j/commit/dbbadc3e215c47bdb913ddf50739ada09a7f23ea
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.3.7
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.5
- https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.10
- https://github.com/mariadb-corporation/mariadb-connector-j
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Sources
- CVE-2026-119279 · CVE Program
- CVE-2026-119279 · NVD
- FIRST EPSS
- GHSA-797x-p4mc-jwpm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-119279 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences