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OSV-2026-1084

UNKNOWN READ in bytes1_char_at

No scoreFix available

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=536956124

Crash type: UNKNOWN READ
Crash state:
bytes1_char_at
basic_match
do_best_fuzzy_match

What each source reports

OSV No score

UNKNOWN READ in bytes1_char_at

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=536956124

Crash type: UNKNOWN READ
Crash state:
bytes1_char_at
basic_match
do_best_fuzzy_match
Record
OSV-2026-1084
Updated
2026-11-02

Affected packages

Affected packages
PackageAffectedFixed
mrab-regex
PyPI
Listed versions, plus commit ranges
2026.7.192026.8.122026.8.302026.8.312026.9.1
Show 5 moreShow less
2026.9.102026.9.192026.9.22026.9.32026.9.9
None known

History

History
RecordedChangedSources
first indexedOSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

OSV-2026-1084 is a vulnerability with no CVSS score yet in mrab-regex, published July 28, 2026. No source lists public exploit code. A source reports a fix.

References

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