Buffer overflow in Janet-Lang Janet
CVE-2026-10267
A security flaw has been discovered in janet-lang janet up to 1.41.0. This affects the function doframe of the file src/core/debug.c. Performing a manipulation results in out-of-bounds read. Attacking locally is a requirement. The exploit has been released to the public and may be used for attacks. The patch is named ed17dd2c5913a23fb1107251e44a9410a3c30cf5.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.001 (1.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000
Affected products
- Janet-Lang Janet — versions 1.0, 1.1, 1.2
Weakness classification (CWE)
References
- vuldb.com/vuln/367546 (technical-description, vdb-entry)
- vuldb.com/vuln/367546/cti (signature, permissions-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 (issue-tracking)
- github.com/biniamf/pocs/tree/main/janet-debug-janet-doframe-env-data-oobread (exploit)
- github.com/janet-lang/janet/commit/ed17dd2c5913a23fb1107251e44a9410a3c30cf5 (patch)
- github.com/janet-lang/janet/ (product)
Frequently asked questions
- What is CVE-2026-10267?
- CVE-2026-10267 is a low-severity vulnerability in Janet-Lang Janet, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2026-06-01.
- How severe is CVE-2026-10267?
- Low severity. CVSS v3 base score is 3.3 out of 10.