CVE-2026-9323
Predictable urwid web session IDs enable session hijack, screen read, and keystroke injection.
Is CVE-2026-9323 being exploited?
Not confirmed. CVE-2026-9323 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-9323?
CVE-2026-9323 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-9323?
Yes. A fix has been recorded for CVE-2026-9323. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-9323 affect?
CVE-2026-9323 affects urwid (web display backend), Python apps using urwid.display.web, Unix hosts with world-readable /tmp. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-9323?
Disable or block urwid.display.web, restrict /tmp, rotate sessions, and apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Predictable session IDs + world-readable /tmp FIFO let attackers read terminals, inject keystrokes, hijack sessions, and execute code as the session user.
Immediate action required
- affected<= 24acd12
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.