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CVE-2026-9323 is a predictable session-identifier vulnerability in Urwid's web display backend. The backend generates its session identifier from two Python Mersenne Twister-derived random values rather than cryptographically secure randomness. Observing approximately 334 issued identifiers can permit reconstruction of the PRNG state and prediction of prior and subsequent identifiers. Separately, the identifier is used in the name of a FIFO placed in a world-listable temporary directory, allowing untrusted local users to enumerate active session identifiers. Possession of a valid identifier permits takeover of the associated web-terminal session.
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33 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability affecting the python-urwid package on TencentOS Server 3. The content assigns a high-impact network attack vector but provides no technical description of the underlying flaw.
A high-impact vulnerability tracked as CVE-2026-9323, addressed for python3-urwid on Miracle Linux 9. Successful exploitation could compromise confidentiality, integrity, and availability, though it requires high attack complexity and an additional precondition under CVSS v4.
A vulnerability in Urwid in which predictable session IDs can enable remote code execution and information disclosure. It affects the python-urwid/python3-urwid packages on Red Hat Enterprise Linux 10 and is addressed by RHSA-2026:60353.
A vulnerability in Urwid involving predictable session IDs that can lead to remote code execution and information disclosure.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.