CVE-2026-10267: janet-lang janet

Affected products, as the CNA wrote them
Vendor	Product	Versions
janet-lang	janet	affected 1.0 affected 1.1 affected 1.2 affected 1.3 affected 1.4 affected 1.5 affected 1.6 affected 1.7 affected 1.8 affected 1.9 affected 1.10 affected 1.11 and 30 more

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
4.8	Medium	4.0	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P	CNA (VulDB)Used for this record
3.3	Low	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C	CNA (VulDB)
3.3	Low	3.0	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C	CNA (VulDB)
1.7	Low	2.0	AV:L/AC:L/Au:S/C:P/I:N/A:N/E:POC/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0012, the 1st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 1 Jun 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/367546 vdb-entrytechnical-description
vuldb.com/vuln/367546/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-10267 third-party-advisory
vuldb.com/submit/825072 third-party-advisory
github.com/janet-lang/janet/issues/1743 issue-tracking
github.com/janet-lang/janet/issues/1743#issuecomment-4322129448 issue-tracking
github.com/janet-lang/janet/commit/ed17dd2c5913a23fb1107251e44a9410a3c30cf5 patch
github.com/janet-lang/janet/ product
github.com/biniamf/pocs/tree/main/janet-debug-janet-doframe-env-data-oobread exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.