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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-2240 Detail

Description

A vulnerability has been found in janet-lang janet up to 1.40.1. The impacted element is the function janetc_pop_funcdef of the file src/core/compile.c. Such manipulation leads to out-of-bounds read. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The name of the patch is 4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5. A patch should be applied to remediate this issue.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulDB
CVSS-BT 1.9 LOW
Vector:  CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/janet-lang/janet/ VulDB Product 
https://github.com/janet-lang/janet/commit/4dd08a4cdef5b1c42d9a2c19fc24412e97ef51d5 VulDB Patch 
https://github.com/janet-lang/janet/issues/1702 VulDB Exploit  Issue Tracking 
https://github.com/janet-lang/janet/issues/1702#issuecomment-3790473369 VulDB Exploit  Issue Tracking 
https://github.com/oneafter/0123/blob/main/ja4/repro VulDB Exploit 
https://vuldb.com/?ctiid.344979 VulDB Permissions Required  VDB Entry 
https://vuldb.com/?id.344979 VulDB Third Party Advisory  VDB Entry 
https://vuldb.com/?submit.753155 VulDB Third Party Advisory  VDB Entry 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-125 Out-of-bounds Read cwe source acceptance level NIST   VulDB  
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer VulDB  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-2240
NVD Published Date:
02/09/2026
NVD Last Modified:
06/17/2026
Source:
VulDB