CVE-2026-55889Medium· 5.3▾ SunlitA flaw was found in xdg-desktop-portal. The service uses a predictable pseudorandom number generator (PRNG) to generate authorization tokens that manage access to shared system resources. By requesting enough tokens to determine the intern…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.2 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the vendor's CSAF advisory record, not NVD.
Exploit-prediction probability, daily snapshots since Oct 25.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
8.3 → 5.3
high → medium
0.4%
A flaw was found in xdg-desktop-portal. The service uses a predictable pseudorandom number generator (PRNG) to generate authorization tokens that manage access to shared system resources. By requesting enough tokens to determine the internal state of the generator, a malicious sandboxed application can predict future tokens. This flaw allows an attacker to intercept or redirect clipboard and drag-and-drop data intended for other applications, resulting in unauthorized data disclosure.
xdg-desktop-portal: xdg-desktop-portal: unauthorized data disclosure via predictable token generation — rated Moderate by Red Hat. Released 2026-10-23.
Affected:
No fix planned:
Fix deferred
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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