OSV-2026-2
Heap-buffer-overflow in cmt_mpack_consume_uint_tag
No scoreFix available
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=472785094
Crash type: Heap-buffer-overflow WRITE 8
Crash state:
cmt_mpack_consume_uint_tag
cmt_mpack_unpack_array
cmt_mpack_unpack_map
What each source reports
OSV No score
Heap-buffer-overflow in cmt_mpack_consume_uint_tag
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=472785094
Crash type: Heap-buffer-overflow WRITE 8
Crash state:
cmt_mpack_consume_uint_tag
cmt_mpack_unpack_array
cmt_mpack_unpack_map
- Record
OSV-2026-2- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
fluent-bitOSS-Fuzz |
Listed versions, plus commit ranges v4.2.1v4.2.2 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
OSV-2026-2 is a vulnerability with no CVSS score yet in fluent-bit, published January 3, 2026. No source lists public exploit code. A source reports a fix.