CVE-2026-2869

janet-lang janet handleattr specials.c janetc_varset out-of-bounds

MEDIUM
5.5
CVSS Score
Published: February 21, 2026 at 02:32 PM UTC
Updated: June 17, 2026 at 10:31 AM UTC
1 product affected across 1 vendorJanet

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.2%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.40.11.40.01.40.1
Vendor states this is fixed in 1.41.0 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (8)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.347106
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.347106
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.754589
Issue TrackingExploit
Source: cverecord
https://github.com/janet-lang/janet/issues/1699
Product
Source: cverecord
https://github.com/janet-lang/janet/

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125CWE-119

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