VulnSocial

CVE-2026-67338Disclosure

LOWCVSS 5.1 · 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

JupyterLab before 4.5.9 contains a stored cross-site scripting vulnerability in the Extension Manager that fails to validate URI protocols in package metadata URLs. Attackers can publish malicious PyPI packages with javascript: URLs in project metadata that execute arbitrary JavaScript in the JupyterLab origin when users click the extension name.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-84

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

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

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-08-01: 1Technical Details · 2026-08-01: 108-01
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-67338 Stored Cross-Site Scripting in JupyterLab Extension Manager Before 4.5.9 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-67338

    Post summary

    This is a disclosure statement announcing a stored XSS vulnerability in JupyterLab Extension Manager prior to version 4.5.9, with no additional details on exploits, patches or active attacks.

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    4.1K followersView on X

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