VulnSocial

CVE-2026-59927Disclosure(mistune_project / mistune)

LOWCVSS 5.3 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-includes and not indirect cycles, allowing two markdown files that include each other to trigger unbounded recursion, raise RecursionError, and crash the rendering request. This issue is fixed in version 3.3.0.

mistune_project CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Exploit / PoC references
Other references
Weakness type (CWE)
CWE-674CWE-755

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • mistune

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
mistune_project
Products
mistune

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-07-08: 2Technical Details · 2026-07-08: 107-08
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-59927 Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-in… https://www.cve.org/CVERecord?id=CVE-2026-59927 ----- Traducción: CVE-2026-59927 Mis… http://infoflow.cloud`

    Post summary

    The post announces CVE‑2026‑59927 affecting the Mistune Markdown parser, highlighting a technical flaw in the Include directive prior to v3.3.0, with no PoC, exploit code, active exploitation, or patch information provided.

    0000037
    91 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-59927 Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the Include directive in src/mistune/directives/include.py detects only direct self-in… https://www.cve.org/CVERecord?id=CVE-2026-59927

    Post summary

    A CVE announcement for Mistune’s Include directive vulnerability is noted, but no exploit details, patches, or active‑exploitation evidence are disclosed.

    00000739
    57.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmistune_projectmistune---

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