CVE-2026-25136
Reflected XSS in Rucio WebUI can steal session tokens via crafted URL.
Is CVE-2026-25136 being exploited?
Not confirmed. CVE-2026-25136 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-25136?
CVE-2026-25136 is rated High with a CVSS score of 8.1. 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-2026-25136?
Yes. A fix has been recorded for CVE-2026-25136. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-25136 affect?
CVE-2026-25136 affects Rucio WebUI (pre-35.8.3, pre-38.5.4, pre-39.3.1). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-25136?
Upgrade to fixed WebUI versions (≥35.8.3, 38.5.4, 39.3.1).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Allows stealing login session tokens via crafted URL, enabling session hijacking.
Immediate action required
- affected< 35.8.3
- affected>= 36.0.0rc1 and < 38.5.4
- affected>= 39.0.0rc1 and < 39.3.1
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.