CVE-2026-10268

MEDIUM4.8

janet-lang janet marsh.c unmarshal_one_fiber integer overflow

Published Jun 1, 2026

Modified 3 weeks ago

Details

A weakness has been identified in janet-lang janet up to 1.41.0. This vulnerability affects the function unmarshal_one_fiber of the file src/core/marsh.c. Executing a manipulation can lead to integer overflow. It is possible to launch the attack on the local host. The exploit has been made available to the public and could be used for attacks. This patch is called d9b1d711ea1fde52ac73a82088b512a3e17bad0d. A patch should be applied to remediate this issue.

References

DETECTION

https://github.com/biniamf/pocs/tree/main/janet-marsh-unmarshal-intovf

WEB

https://github.com/janet-lang/janet/

FIX

https://github.com/janet-lang/janet/commit/d9b1d711ea1fde52ac73a82088b512a3e17bad0d

WEB

https://github.com/janet-lang/janet/issues/1744

ADVISORY

https://vuldb.com/cve/CVE-2026-10268

ADVISORY