CVE-2026-10268

Low

Description

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.

SeverityLow

CVSS3.3

Exploit probability—

Product

Janet

PublishedJun 1, 2026

First seenJun 1, 2026

Weakness typeCWE-190Integer overflow CWE-189CWE-189

How to fix

Patches

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

Affected products

Product	Affected versions	Fixed in
janet-lang janet	1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.27, 1.28, 1.29, 1.30, 1.31, 1.32, 1.33, 1.34, 1.35, 1.36, 1.37, 1.38, 1.39, 1.40, 1.41.0	—

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