OSV-2025-1039 UNKNOWN WRITE in fuzz_regexp
A memory corruption vulnerability in a regular expression library allows attackers to potentially execute arbitrary code or cause denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not stated
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- None listed
What is OSV-2025-1039?
OSV-2025-1039 is a memory corruption vulnerability in quickjs, published on 29 Dec 2025.
Official description
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=471926738
Crash type: UNKNOWN WRITE
Crash state:
fuzz_regexp
Which versions are affected by OSV-2025-1039?
1 open source package ship an affected version, including quickjs.
| Package | Affected | Fixed in |
|---|---|---|
quickjs OSS-Fuzz | All versions | None |
How do I fix OSV-2025-1039?
No fix has been published for OSV-2025-1039 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is OSV-2025-1039 being exploited?
There is no known exploitation of OSV-2025-1039 in the wild and no public exploit code.