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CVE-2026-9323

🗓️ 18 Jul 2026 13:51:06Reported by VulnCheckType 
cve
 cve
🔗 web.nvd.nist.gov👁 103 Views🌐 WEB

CVE-2026-9323: Insecure PRNG in urwid web backend exposes session IDs and enables local hijack.

Related
Detection
Affected
Refs
Paths
Vulners
Node
urwidurwidRange≤24
[
  {
    "defaultStatus": "affected",
    "vendor": "urwid",
    "product": "urwid",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "git",
        "lessThanOrEqual": "24acd12"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
X-Urwid-IDheader/The X-Urwid-ID header contains a session identifier generated using a non-cryptographically secure PRNG (Mersenne Twister). By observing approximately 334 session IDs, an attacker can reconstruct the PRNG state and predict future session IDs.CWE-338
urwid_idnested/The polling endpoint uses the urwid_id session identifier. If an attacker predicts or enumerates a valid urwid_id, they can read the victim's terminal screen, inject keystrokes, or crash the session.CWE-338

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15 Sep 2026 08:17Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.18.1
CVSS 49.2
EPSS0.00715
SSVC
103