Low 3.3Published Jun 1, 2026

CVE-2026-10268janet-lang janet marsh.c unmarshal_one_fiber integer overflow

Updated under an hour ago (Oct 28, 2026, 4:23 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for janet-lang janet

Exploited in the last 30 days

A weakness has been identified in janet-lang janet up to 1.41.0. This vulnerability affects the function unmarshal_one_fiber of the file src/core/marsh.c. Executing a manipulation can lead to integer overflow. It is possible to launch the attack on the local host. The exploit has been made available to the public and could be used for attacks. This patch is called d9b1d711ea1fde52ac73a82088b512a3e17bad0d. A patch should be applied to remediate 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-190, CWE-189
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: Deferred
Record last updated: Jun 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

janet-lang janet janet-lang:janet	1.0; 1.1; 1.2; 1.3; 1.4; 1.5; 1.6; 1.7; and 34 more ranges	CNA record

References

References

https://vuldb.com/vuln/367547	vdb-entry, technical-description
https://vuldb.com/vuln/367547/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-10268	third-party-advisory
https://vuldb.com/submit/825075	third-party-advisory
https://github.com/janet-lang/janet/issues/1744	issue-tracking
https://github.com/biniamf/pocs/tree/main/janet-marsh-unmarshal-intovf	exploit
https://github.com/janet-lang/janet/commit/d9b1d711ea1fde52ac73a82088b512a3e17bad0d	patch
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.