Description
A vulnerability was found in janet-lang janet up to 1.40.1. This affects the function os_strftime of the file src/core/os.c. Performing a manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is named 0f285855f0e34f9183956be5f16e045f54626bff. To fix this issue, it is recommended to deploy a patch.
References (8)
Core 8
Core References
Permissions Required, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.344980
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.344980
Permissions Required, VDB Entry third-party-advisory
https://vuldb.com/?submit.753156
Issue Tracking issue-tracking
https://github.com/janet-lang/janet/issues/1701
Issue Tracking issue-tracking
https://github.com/janet-lang/janet/issues/1701#event-4446770461
Various Sources exploit
https://github.com/oneafter/0123/blob/main/ja3/repro
Various Sources product
https://github.com/janet-lang/janet/
Scores
CVSS v3
3.3
EPSS
0.0017
EPSS Percentile
6.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-125
Status
published
Products (1)
janet-lang/janet
< 1.40.1
Published
Feb 09, 2026
Tracked Since
Feb 18, 2026