CVE-2026-2869
janet-lang janet handleattr specials.c janetc_varset out-of-bounds
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.
INFO
Published Date :
Feb. 21, 2026, 3:15 p.m.
Last Modified :
Feb. 26, 2026, 2:46 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Upgrade janet-lang to version 1.41.0 or later.
- Apply the patch 2fabc80151a2b8834ee59cda8a70453f848b40e5.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-2869.
| URL | 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-2869 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-2869
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-2869 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-2869 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 26, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-125 Added CPE Configuration OR *cpe:2.3:a:janet-lang:janet:*:*:*:*:*:*:*:* versions up to (including) 1.40.1 Added Reference Type VulDB: https://github.com/janet-lang/janet/ Types: Product Added Reference Type VulDB: https://github.com/janet-lang/janet/commit/2fabc80151a2b8834ee59cda8a70453f848b40e5 Types: Patch Added Reference Type VulDB: https://github.com/janet-lang/janet/issues/1699 Types: Exploit, Issue Tracking Added Reference Type VulDB: https://github.com/janet-lang/janet/releases/tag/v1.41.0 Types: Release Notes Added Reference Type VulDB: https://github.com/oneafter/0123/blob/main/ja1/repro Types: Exploit Added Reference Type VulDB: https://vuldb.com/?ctiid.347106 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.347106 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.754589 Types: Third Party Advisory, VDB Entry -
New CVE Received by [email protected]
Feb. 21, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:L/AC:L/Au:S/C:N/I:N/A:P) Added CWE CWE-119 Added CWE CWE-125 Added Reference https://github.com/janet-lang/janet/ Added Reference https://github.com/janet-lang/janet/commit/2fabc80151a2b8834ee59cda8a70453f848b40e5 Added Reference https://github.com/janet-lang/janet/issues/1699 Added Reference https://github.com/janet-lang/janet/releases/tag/v1.41.0 Added Reference https://github.com/oneafter/0123/blob/main/ja1/repro Added Reference https://vuldb.com/?ctiid.347106 Added Reference https://vuldb.com/?id.347106 Added Reference https://vuldb.com/?submit.754589