CVE-2026-9323: urwid urwid

Insecure PRNG and Information Exposure in urwid Web Display Backend

CVSS 9.2 CriticalCriticalEPSS 0.0072 · 54th percentile

Critical, because:

CVSS score 9.2: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 18 Jul 2026, 13:51 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
urwid	urwid	affected 24acd12 and earlier git Other versions: affected

Identifiers

CVE-2026-9323

CNA

VulnCheck

Weakness (CWE)

CWE-338

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.2	Critical	4.0	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)Used for this record
8.1	High	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0072, the 54th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

18 Jul 2026, 13:51 UTC Confirmed by the CVE List

Sources

References from the CNA

github.com/urwid/urwid/security/advisories/GHSA-rjwp-g85x-gmjv vendor-advisory
github.com/urwid/urwid product
github.com/urwid/urwid/commit/24acd12f0d0598036d0d577f2ee63e4a27b4a3d9 patch
github.com/urwid/urwid/issues/1127 issue-tracking
github.com/urwid/urwid/pull/1128 issue-trackingpatch
www.vulncheck.com/advisories/insecure-prng-and-information-exposure-in-urwid-web-display-backend third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.