CVE-2026-2242janet-lang janet specials.c janetc_if out-of-bounds
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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A vulnerability was determined in janet-lang janet up to 1.40.1. This impacts the function janetc_if of the file src/core/specials.c. Executing a manipulation can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. This patch is called c43e06672cd9dacf2122c99f362120a17c34b391. It is advisable to implement a patch to correct this issue.
- CVSS
- 3.3 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
- Weakness (CWE)
- CWE-125, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Analyzed
- Record last updated
- Feb 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
janet-lang janet janet_lang:janet (from the name) | 1.40.0; 1.40.1 | CNA record |
janet-lang janet janet-lang:janet | through 1.40.1 | NVD |
References
- https://vuldb.com/?id.344981vdb-entry, technical-description, third-party-advisory
- https://vuldb.com/?ctiid.344981signature, permissions-required, vdb-entry
- https://vuldb.com/?submit.754495third-party-advisory, vdb-entry
- https://github.com/janet-lang/janet/issues/1700issue-tracking, exploit
- https://github.com/janet-lang/janet/issues/1702issue-tracking, exploit
- https://github.com/oneafter/0123/blob/main/ja2/reproexploit
- https://github.com/janet-lang/janet/commit/c43e06672cd9dacf2122c99f362120a17c34b391patch
- https://github.com/janet-lang/janet/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.