CVE-2026-92616: error311 FileRise · Insufficient Session Expiration
Affects error311 FileRiseSource CVE Database V5
Not known to be exploited · CVSS 7.6 High : upgrade to 3.28.0 soon.
Data as of 31 Oct 2026, 20:20 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.28.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Upgrade error311 FileRise to 3.28.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| error311FileRise | Affected
| Fixed in
|
GitHubFileRisepkg:github/FileRiseOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in FileRise version 3.28.0. Users should upgrade to version 3.28.0 or later to remediate this vulnerability. No additional mitigation steps are indicated in the provided data.
Description
FileRise before version 3.28.0 has a privilege escalation vulnerability due to insufficient session expiration and improper session isolation between its WebDAV interface and web application session context. Authenticated low-privilege users can combine valid Basic-Auth credentials with an active admin PHPSESSID cookie to bypass authorization boundaries, gaining unauthorized read and write access. This occurs because the WebDAV layer inherits elevated privileges from an ambient web session instead of enforcing independent stateless authentication as required by RFC 4918.