VulnSocial

CVE-2026-59926Disclosure(mistune_project / mistune)

LOWCVSS 6.1 · 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 3.2.1, render_admonition() in src/mistune/directives/admonition.py concatenates the Admonition directive :class: option into the HTML class attribute without escaping, allowing attribute injection and cross-site scripting even when HTMLRenderer escape mode is enabled. This issue is fixed in version 3.2.1.

mistune_project CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Patch / fix
Vendor / third-party advisories
Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

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 2 signals
  • Disclosure: 2 classified signals
  • 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: 207-08
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-59926 Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_admonition() in src/mistune/directives/admonition.py concatenates the Admonitio… https://www.cve.org/CVERecord?id=CVE-2026-59926 ----- Traducción: CVE-2026-59926 Mis… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-59926 affecting Mistune, noting a concatenation bug in render_admonition() before v3.2.1, but it gives no proof of exploitation or mitigation.

    0000041
    91 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-59926 Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.2.1, render_admonition() in src/mistune/directives/admonition.py concatenates the Admonitio… https://www.cve.org/CVERecord?id=CVE-2026-59926

    Post summary

    The content announces CVE‑2026‑59926 in Mistune, describing a code‑level issue in `render_admonition()` prior to v3.2.1, but provides no PoC, exploit, or patch information.

    00000735
    57.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmistune_projectmistune---

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