CVE-2026-86303 92181 markdown md.c lds out-of-bounds
Remote attackers can trigger an out-of-bounds read in the markdown library, potentially exposing memory or causing crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-86303?
CVE-2026-86303 is a medium-severity memory corruption vulnerability in 92181 markdown, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2026-86303?
How do I fix CVE-2026-86303?
No fix has been published for CVE-2026-86303 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-86303 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86303 exists.
Sources
Also known as GHSA-jvfg-5f69-7f59.