7.3High
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.
What this means for your business
- An attacker can use it remotely, over a network, without a login, and without anyone at your company clicking anything.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
Not sure if your company is exposed?
Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.
Scoring
- CVSS
- 7.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- CVSS v4
- 6.9
- Weakness
- CWE-119
- Assigned by
- cna@vuldb.com
Dates
- Published
- 2026-09-07
- Last modified
- 2026-09-08
- Sources
- NVD
References
- https://github.com/92181/markdown/
- https://github.com/92181/markdown/commit/c000d2f9cf390c315378d3717cf20911cf3e80a6
- https://github.com/92181/markdown/issues/1
- https://github.com/92181/markdown/pull/2
- https://vuldb.com/cve/CVE-2026-86303
- https://vuldb.com/submit/907499
- https://vuldb.com/vuln/399467
- https://vuldb.com/vuln/399467/cti
- https://github.com/92181/markdown/issues/1