VulnSocial

CVE-2026-59923Disclosure(mistune_project / mistune)

LOWCVSS 6.1 · MEDIUM

Signal is active with 1 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, HTMLRenderer.safe_url() does not block percent-encoded javascript URIs, allowing attacker-supplied Markdown links or images to bypass URL protections and execute script in rendered HTML. 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-79

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

  • 1 mentions across 1 observed day

What's happening

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

Affected systems

Vendors
mistune_project
Products
mistune

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-07-21: 1Technical Details · 2026-07-21: 107-21
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
Full discourse1 post
  • DailyCVE@dailycve
    Disclosure

    🟠 Mistune, Cross-Site Scripting (XSS), #CVE-2026-59923 (Medium) -DC-Jul2026-1108 https://dailycve.com/mistune-cross-site-scripting-xss-cve-2026-59923-medium-dc-jul2026-1108/

    Post summary

    The text announces a medium‑severity XSS vulnerability in Mistune (CVE‑2026‑59923) and links to a detailed CVE report.

    0000049
    220 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appmistune_projectmistune---

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