CVE-2026-2869

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.

CVSS v3 3.3 LOW
CVSS v2.0 1.7 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

1.7^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 3.1 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/janet-lang/janet/	Product
https://github.com/janet-lang/janet/commit/2fabc80151a2b8834ee59cda8a70453f848b40e5	Patch
https://github.com/janet-lang/janet/issues/1699	Exploit Issue Tracking
https://github.com/janet-lang/janet/releases/tag/v1.41.0	Release Notes
https://github.com/oneafter/0123/blob/main/ja1/repro	Exploit
https://vuldb.com/?ctiid.347106	Permissions Required VDB Entry
https://vuldb.com/?id.347106	Third Party Advisory VDB Entry
https://vuldb.com/?submit.754589	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:janet-lang:janet:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-21 15:15

Updated : 2026-06-17 10:31

NVD link : CVE-2026-2869

Mitre link : CVE-2026-2869

CVE.ORG link : CVE-2026-2869

JSON object : View

Products Affected

janet-lang

janet

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-125

Out-of-bounds Read

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"descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se identific\u00f3 una vulnerabilidad en janet-lang janet hasta la versi\u00f3n 1.40.1. Afectada por esta vulnerabilidad es la funci\u00f3n janetc_varset del archivo src/core/specials.c del componente gestor handleattr. La manipulaci\u00f3n conduce a una lectura fuera de l\u00edmites. El ataque solo puede realizarse desde un entorno local. El exploit est\u00e1 disponible p\u00fablicamente y podr\u00eda ser utilizado. La actualizaci\u00f3n a la versi\u00f3n 1.41.0 soluciona este problema. El identificador del parche es 2fabc80151a2b8834ee59cda8a70453f848b40e5. El componente afectado deber\u00eda ser actualizado."}], "lastModified": "2026-06-17T10:31:55.237", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:janet-lang:janet:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D63D3EB2-96FF-4D2B-AD67-2DE091B2CC05", "versionEndIncluding": "1.40.1"}], "operator": "OR"}]}], "sourceIdentifier": "cna@vuldb.com"}