python-markdown2 through 2.5.5 contains a denial of service vulnerability that allows remote users to exhaust CPU by submitting Markdown with unclosed inline link destinations. Attackers can submit repeated '[a](' or '![a](' sequences, causing _find_balanced to rescan the remaining document for each link and consume quadratic CPU time.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 28 Oct 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | python-markdown2 through 2.5.5 contains a denial of service vulnerability that allows remote users to exhaust CPU by submitting Markdown with unclosed inline link destinations. Attackers can submit repeated '[a](' or '![a](' sequences, causing _find_balanced to rescan the remaining document for each link and consume quadratic CPU time. | |
| Title | python-markdown2 through 2.5.5 Denial of Service via Unclosed Inline Link Destinations | |
| First Time appeared |
Python-markdown2 Project
Python-markdown2 Project python-markdown2 |
|
| Weaknesses | CWE-407 | |
| CPEs | cpe:2.3:a:python-markdown2_project:python-markdown2:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Python-markdown2 Project
Python-markdown2 Project python-markdown2 |
|
| References |
|
|
| Metrics |
cvssV3_1
|
Projects
Sign in to view the affected projects.
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-28T21:11:20.814Z
Reserved: 2026-10-28T17:31:29.498Z
Link: CVE-2026-118694
No data.
Status : Received
Published: 2026-10-28T22:17:13.700
Modified: 2026-10-28T22:17:13.700
Link: CVE-2026-118694
No data.
OpenCVE Enrichment
Updated: 2026-10-29T05:45:14Z
Weaknesses