Vulnerability in Error311 Filerise
CVE-2026-92616
FileRise before version 3.28.0 contains a privilege escalation vulnerability that allows authenticated low-privilege attackers to gain unauthorized read and write access by exploiting improper session isolation between the WebDAV interface and the web application session context. Attackers can combine valid Basic-Auth credentials with an active admin PHPSESSID cookie to bypass authorization boundaries, as the WebDAV layer incorrectly inherits elevated privileges from an ambient web session rather than enforcing independent stateless authentication per RFC 4918.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (33.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- FileRise v3.28.0 Release Notes (release-notes, patch)
- VulnCheck Advisory (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92616?
- CVE-2026-92616 is a medium-severity vulnerability in Error311 Filerise, classified under Insufficient Session Expiration. CVSS score: 6.8/10. Published 2026-09-16.
- How severe is CVE-2026-92616?
- Medium severity. CVSS v3 base score is 6.8 out of 10.