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VulnerabilityPublished Updated

CVE-2026-92616: error311 FileRise · Insufficient Session Expiration

Affects error311 FileRiseSource CVE Database V5

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Not known to be exploited · CVSS 7.6 High : upgrade to 3.28.0 soon.

Data as of 31 Oct 2026, 20:20 UTC

CVSS 4.0 base score
7.6High
How severe the flaw is on the 0–10 CVSS scale.
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:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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

ProductAffectedFixed in
error311FileRiseAffected
  • <3.28.0
Fixed in
  • 3.28.0
GitHubFileRisepkg:github/FileRiseOther threatsAffected
  • <3.28.0
Fixed in
  • 3.28.0

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.

References

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