Buffer overflow in 92181 Markdown
CVE-2026-86303
A vulnerability was determined in 92181 markdown up to 058cab0cb7fb245a0ccc6b8446963ff8d573558f. Affected by this issue is the function lds of the file md.c. Executing a manipulation can lead to out-of-bounds read. The attack can be executed remotely. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. This patch is called c000d2f9cf390c315378d3717cf20911cf3e80a6. A patch should be applied to remediate this issue.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (44.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- 92181 Markdown — versions 058cab0cb7fb245a0ccc6b8446963ff8d573558f
Weakness classification (CWE)
References
- vuldb.com/vuln/399467 (technical-description, vdb-entry)
- vuldb.com/vuln/399467/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-86303 (third-party-advisory)
- vuldb.com/submit/907499 (third-party-advisory)
- github.com/92181/markdown/issues/1 (issue-tracking)
- github.com/92181/markdown/pull/2 (issue-tracking, patch)
- github.com/92181/markdown/commit/c000d2f9cf390c315378d3717cf20911cf3e80a6 (patch)
- github.com/92181/markdown/ (product)
Frequently asked questions
- What is CVE-2026-86303?
- CVE-2026-86303 is a high-severity vulnerability in 92181 Markdown, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.3/10. Published 2026-09-07.
- How severe is CVE-2026-86303?
- High severity. CVSS v3 base score is 7.3 out of 10.