CVE-2026-33070Public exploitNetwork attack vector

Share-link denial of service via unauthenticated deletion

Published Mar 20, 2026 · Updated Mar 20, 2026

Missing authentication in FileRise before 3.8.0 allows remote attackers to delete file share links through an unauthenticated HTTP request. The POST /api/file/deleteShareLink.php route invokes FileController::deleteShareLink(), which accepts a supplied token and deletes its entry without authentication, authorization, or CSRF validation. Exploitation requires a valid 32-character share token and destroys access through that link without deleting the underlying shared file.

CVSS severity3.7
Low
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in FileRise before 3.8.0 allows remote attackers to delete file share links through an unauthenticated HTTP request. The POST /api/file/deleteShareLink.php route invokes FileController::deleteShareLink(), which accepts a supplied token and deletes its entry without authentication, authorization, or CSRF validation. Exploitation requires a valid 32-character share token and destroys access through that link without deleting the underlying shared file.

The record

CVE
CVE-2026-33070
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
error311
Product
FileRise
Classifications
CWE-306, T1485
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 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=< 3.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

error311 · FileRiseversion=< 3.8.0

Published CVSS scores

3.7GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1485Data Destruction

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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