Apache Thrift: Lua `TJsonProtocol` string/number readers have no size bound and are quadratic
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-407.
Summary
Allocation of resources without limits or throttling, Inefficient Algorithmic Complexity vulnerability in Apache Thrift Lua bindings. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
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
Remediation
- Fix · CNA Apache Thrift (Apache Software Foundation) Fixed in 0.25.0
Red Hat 1 advisory
- RHSA-2026:74369 Released 2026-10-01 · Red Hat rating ImportantRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images perl-thrift-0.25.0-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, perl-thrift-0.25.0-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, python3-thrift-0.25.0-0.1.hum1@aarch64 +10
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Apache Thrift — lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1
61 records Highest priority Priority MEDIUM 31 MEDIUM, 30 LOW
Other records, highest priority first
- TI-2026-65915 Apache Thrift: PHP `thrift_protocol` accelerator: zero-byte container elementsPriority MEDIUM 45
- TI-2026-65974 Apache Thrift: Ruby `SimpleServer` ends `serve()` on any non-Transport/Protocol exceptionPriority MEDIUM 44
- TI-2026-65968 Apache Thrift: Lua `TFramedTransport`/`THttpTransport` re-slice the buffer on every read (quadratic)Priority MEDIUM 44
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Hardened Images | Fixed | RHSA-2026:74369 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-94655
- 2026-10-03 Alias added: GHSA-cgx7-qmcg-22w3
- 2026-10-21 Fix available: RHSA-2026:74369 · Red Hat
- 2026-10-21 Fix available: Red Hat Hardened Images · Red Hat
- 2026-10-21 CVSS score added · Red Hat
References
More Apache vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2024-30292 Apache OFBiz: Confused controller-view authorization logic (forced browsing) KEVCVSS 3.1CRITICAL 9.8
- TI-2024-26062 Apache OFBiz: Unauthenticated endpoint could allow execution of screen rendering code KEVCVSS 3.1CRITICAL 9.8
- TI-2024-21190 Apache OFBiz: Path traversal leading to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2024-18186 Apache HugeGraph-Server: Command execution in gremlin KEVCVSS 3.1CRITICAL 9.8
- TI-2023-25106 Deserialization of untrusted data in Apache ActiveMQ KEVCVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-94655 · CVE Program
- CVE-2026-94655 · NVD
- FIRST EPSS
- GHSA-cgx7-qmcg-22w3 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-94655 · 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