OSV-2026-53
Heap-use-after-free in graph::LigatureSubstFormat1::shrink
No scoreFix available
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475607265
Crash type: Heap-use-after-free READ 8
Crash state:
graph::LigatureSubstFormat1::shrink
graph::LigatureSubstFormat1::split_context_t::shrink
hb_vector_t<unsigned int, false> graph::actuate_subtable_split<graph::LigatureSu
What each source reports
OSV No score
Heap-use-after-free in graph::LigatureSubstFormat1::shrink
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475607265
Crash type: Heap-use-after-free READ 8
Crash state:
graph::LigatureSubstFormat1::shrink
graph::LigatureSubstFormat1::split_context_t::shrink
hb_vector_t<unsigned int, false> graph::actuate_subtable_split<graph::LigatureSu
- Record
OSV-2026-53- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
harfbuzzOSS-Fuzz |
Listed versions, plus commit ranges 12.3.012.3.1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
OSV-2026-53 is a vulnerability with no CVSS score yet in harfbuzz, published January 15, 2026. No source lists public exploit code. A source reports a fix.