CVE-2026-10268 MEDIUM

CVE-2026-10268: janet-lang janet marsh.c unmarshal_one_fiber integer overflow

Vendor Janet-Lang
Product janet
Weakness CWE-190
Published June 1, 2026
Last update June 1, 2026

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 1, 2026 Record updated