CVE-2026-2242

1.9 lowEPSS 0.2%

A vulnerability was determined in janet-lang janet up to 1.40.1. This impacts the function janetc_if of the file src/core/specials.c. Executing a manipulation can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called c43e06672cd9dacf2122c99f362120a17c34b391. It is advisable to implement a patch to correct this issue.

Severity

CVSS 4.0

1.9 low

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

CVSS 3.1

6.1 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-31)
CWEs: CWE-125, CWE-119
Published: 2026-02-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

janet-lang:janet

References

https://github.com/janet-lang/janet/
https://github.com/janet-lang/janet/commit/c43e06672cd9dacf2122c99f362120a17c34b391
https://github.com/janet-lang/janet/issues/1700
https://github.com/janet-lang/janet/issues/1702
https://github.com/oneafter/0123/blob/main/ja2/repro

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