CVE-2026-86303 Details
Description
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.
A vulnerability allowing an out-of-bounds read has been identified in 92181 Markdown versions prior to 058cab0cb7fb245a0ccc6b8446963ff8d573558f. The issue arises in the 'lds' function within 'md.c', where the parser can read beyond the allocated buffer when processing markdown files that end with a newline. This vulnerability can be exploited remotely, leading to undefined behavior, potential memory access violations, and application crashes.
Users should update to the latest version of 92181 Markdown, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 7, 2026CISA-ADP
Assessed Sep 8, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/92181/markdown/issues/1 | CISA-ADP | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/92181/markdown/ | [email protected] | Vendor |
| https://github.com/92181/markdown/commit/c000d2f9cf390c315378d3717cf20911cf3e80a6 | [email protected] | Source CodeVendor |
| https://github.com/92181/markdown/issues/1 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/92181/markdown/pull/2 | [email protected] | Issue TrackingVendor |
| https://vuldb.com/cve/CVE-2026-86303 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/907499 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/399467 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/399467/cti | [email protected] | AdvisoryPermission Required |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| 92181 markdown | <= 058cab0cb7fb245a0ccc6b8446963ff8d573558f |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 8, 2026 | CVE Modified | CISA-ADP |
| Sep 7, 2026 | New CVE Received | [email protected] |