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CVE-2026-86303

7.3 · HIGH

A vulnerability was determined in 92181 markdown up to 058cab0cb7fb245a0ccc6b8446963ff8d573558f.

Published Sep 7, 2026CWE-119EPSS 0.54%

Overview

CVE-2026-86303 is a high-severity vulnerability. It was published on September 7, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/92181/markdown/GitHubgithub.com/92181/markdown/commit/c000d2f9cf390c315378d3717cf20911cf3e80a6GitHubgithub.com/92181/markdown/issues/1GitHubgithub.com/92181/markdown/pull/2Refvuldb.com/cve/CVE-2026-86303Refvuldb.com/submit/907499Refvuldb.com/vuln/399467Refvuldb.com/vuln/399467/ctiGitHubgithub.com/92181/markdown/issues/1

How CyberStrike helps

Frequently asked questions

What is CVE-2026-86303?

CVE-2026-86303 is a high-severity vulnerability. It was published on September 7, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-86303?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-86303?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-86303?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-86303 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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