Low 3.3Published Feb 9, 2026

CVE-2026-2241janet-lang janet os.c os_strftime out-of-bounds

Updated under an hour ago (Oct 27, 2026, 9:00 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for janet-lang janet

Exploited in the last 30 days

A vulnerability was found in janet-lang janet up to 1.40.1. This affects the function os_strftime of the file src/core/os.c. Performing a manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is named 0f285855f0e34f9183956be5f16e045f54626bff. To fix this issue, it is recommended to deploy a patch.

CVSS: 3.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
Weakness (CWE): CWE-125, CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Analyzed
Record last updated: Feb 23, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

janet-lang janet janet_lang:janet (from the name)	1.40.0; 1.40.1	CNA record
janet-lang janet janet-lang:janet	through 1.40.1	NVD

References

References

https://vuldb.com/?id.344980	vdb-entry, technical-description, third-party-advisory
https://vuldb.com/?ctiid.344980	signature, permissions-required, vdb-entry
https://vuldb.com/?submit.753156	third-party-advisory, vdb-entry
https://github.com/janet-lang/janet/issues/1701	issue-tracking, exploit
https://github.com/janet-lang/janet/issues/1701#event-4446770461	issue-tracking, exploit
https://github.com/oneafter/0123/blob/main/ja3/repro	exploit
https://github.com/janet-lang/janet/commit/0f285855f0e34f9183956be5f16e045f54626bff	patch
https://github.com/janet-lang/janet/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.