CVE-2026-86432
Last modified
CVE-2026-86432 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. commonmark versions from 2.0.0 before 2.8.4 contain a denial of service vulnerability in XmlRenderer that emits depth-proportional indentation for every XML tag. Attackers can provide deeply nested Markdown or AST structures to cause quadratic memory consumption and output amplification, exhausting server resources.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
Description
commonmark versions from 2.0.0 before 2.8.4 contain a denial of service vulnerability in XmlRenderer that emits depth-proportional indentation for every XML tag. Attackers can provide deeply nested Markdown or AST structures to cause quadratic memory consumption and output amplification, exhausting server resources.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| thephpleague | commonmark | >= 2.0.0, < 2.8.4 |
References
Timeline
- Published
- Last Modified
- Status
- Undergoing Analysis
Frequently Asked Questions
What is CVE-2026-86432?
How severe is CVE-2026-86432?
How do I fix CVE-2026-86432?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-86427LibreNMS before 26.8.0 contains an argument injection vulner…8.8
- CVE-2026-86428commonmark versions from 1.5.0 before 2.10.0 contain a denia…7.5
- CVE-2026-86429The league/commonmark (thephpleague/commonmark) library in v…7.5
- CVE-2026-8643pip would treat console_scripts and gui_scripts as paths ins…5.5
- CVE-2026-86430league/commonmark versions before 2.9.1 contain multiple den…7.5
- CVE-2026-86431league/commonmark (thephpleague/commonmark) versions >= 2.7.…7.2
- CVE-2026-86433commonmark versions from 1.5.0 before 2.8.4 contain a denial…7.5
- CVE-2026-86434league/commonmark versions >= 2.0.0 and < 2.8.4 (patched in …7.5
- CVE-2026-86435commonmark versions from 1.5.0 before 2.8.4 contain a denial…7.5
- CVE-2026-86436Lara Dashboard before 1.3.2 fails to authorize access to the…5.4
- CVE-2026-86437Lara Dashboard before 1.3.2 authorizes the POST /admin/setti…7.2
- CVE-2026-86438Lara Dashboard before 1.3.2 fails to authorize the Marketpla…7.2
Are you affected by CVE-2026-86432?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST