CVE-2026-33477Public exploitNetwork attack vector

Cross-user snippet disclosure via missing ownership check

Published Mar 26, 2026 · Updated Mar 26, 2026

Incorrect authorization in FileRise 2.3.7 through 3.10.0 allows remote authenticated users to read other users' file snippets. The FileController::snippet() path accepts folder-level canReadOwn access, resolves the requested file, and returns preview content without verifying the uploader. Exploitation requires read_own access to the shared folder and exposes only bounded text or supported Office-document preview content, not file modification.

CVSS severity4.3
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in FileRise 2.3.7 through 3.10.0 allows remote authenticated users to read other users' file snippets. The FileController::snippet() path accepts folder-level canReadOwn access, resolves the requested file, and returns preview content without verifying the uploader. Exploitation requires read_own access to the shared folder and exposes only bounded text or supported Office-document preview content, not file modification.

The record

CVE
CVE-2026-33477
Published
Mar 26, 2026
Updated
Mar 26, 2026
Vendor
error311
Product
FileRise
Classifications
CWE-863, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 2.3.7, < 3.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

error311 · FileRiseversion=>= 2.3.7, < 3.11.0

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1213Data from Information Repositories

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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