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VulnerabilityPublished

CVE-2026-33329: error311 FileRise · Path Traversal

Affects error311 FileRiseSource CVE Database V5

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Not known to be exploited · CVSS 8.1 High : upgrade to 3.10.0 soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
8.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.10.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Mar 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 29 Oct 2026.

What to do

Upgrade FileRise and error311/FileRise to 3.10.0.

Affected software

ProductAffectedFixed in
error311FileRiseAffected
  • >=1.0.1 <3.10.0
Fixed in
  • 3.10.0
GitHuberror311/FileRisepkg:github/error311/FileRiseOther threatsAffected
  • >=1.0.1 <3.10.0
Fixed in
  • 3.10.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

  1. Upgrade FileRise installations to version 3.10.0 or later, where the vulnerability is patched.
  2. If immediate upgrade is not possible, implement strict input validation and sanitization on the resumableIdentifier parameter to prevent path traversal sequences such as '../'.
  3. Restrict upload permissions to trusted users only and enforce strong authentication mechanisms, including multi-factor authentication where possible.
  4. Employ filesystem permissions and sandboxing to limit the directories where the FileRise service can write or delete files, minimizing potential damage from exploitation.
  5. Monitor logs for unusual upload activity or file deletions that could indicate exploitation attempts.
  6. Conduct regular security audits and penetration tests focusing on file upload functionalities.
  7. Consider network segmentation to isolate FileRise servers from critical infrastructure to reduce impact in case of compromise.

Description

CVE-2026-33329 is a high-severity path traversal vulnerability in FileRise, a self-hosted web file manager and WebDAV server. Versions from 1.0.1 up to but not including 3.10.0 are affected. The issue arises because the resumableIdentifier parameter in the chunked upload handler is concatenated directly into filesystem paths without sanitization. An authenticated user with upload permissions can exploit this flaw to write files to arbitrary directories, delete directories during cleanup, and probe for file or directory existence. No user interaction beyond authentication is required, and the vulnerability allows significant integrity and availability impact. The vulnerability has been patched in version 3.

References

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