CVE-2026-2869

low-risk
Published 2026-02-21

A vulnerability was identified in janet-lang janet up to 1.40.1. Affected by this vulnerability is the function janetc_varset of the file src/core/specials.c of the component handleattr Handler. The manipulation leads to out-of-bounds read. The attack can only be performed from a local environment. The exploit is publicly available and might be used. Upgrading to version 1.41.0 addresses this issue. The identifier of the patch is 2fabc80151a2b8834ee59cda8a70453f848b40e5. The affected component should be upgraded.

Do I need to act?

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0.02% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (1)

Janet

Affected Vendors

Janet-Lang

References (8)

Product https://github.com/janet-lang/janet/
Patch https://github.com/janet-lang/janet/commit/2fabc80151a2b8834ee59cda8a70453f848b4...
Exploit https://github.com/janet-lang/janet/issues/1699
Release Notes https://github.com/janet-lang/janet/releases/tag/v1.41.0
Exploit https://github.com/oneafter/0123/blob/main/ja1/repro
Permissions Required https://vuldb.com/?ctiid.347106
Third Party Advisory https://vuldb.com/?id.347106
Third Party Advisory https://vuldb.com/?submit.754589
18
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal