CVE-2025-21622Public exploitNetwork attack vector

Authenticated file deletion via traversed avatar URL

Published Jan 7, 2025 · Updated Jan 7, 2025

Path traversal in ClipBucket V5 5.5.1 - 236 and earlier allows remote authenticated users to delete server files through a crafted avatar URL. The update_user_avatar_bg function prefixes the database-stored avatar_url with the avatars directory and passes the result to unlink without rejecting traversal sequences. The URL-avatar option is enabled by default, and any low-level account can delete files writable by the ClipBucket process, including application or configuration files.

CVSS severity7.5
High
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in ClipBucket V5 5.5.1 - 236 and earlier allows remote authenticated users to delete server files through a crafted avatar URL. The update_user_avatar_bg function prefixes the database-stored avatar_url with the avatars directory and passes the result to unlink without rejecting traversal sequences. The URL-avatar option is enabled by default, and any low-level account can delete files writable by the ClipBucket process, including application or configuration files.

The record

CVE
CVE-2025-21622
Published
Jan 7, 2025
Updated
Jan 7, 2025
Vendor
MacWarrior
Product
ClipBucket V5
Classifications
CWE-22, CWE-20, T1070.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 2025Record 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=< 5.5.1 - 237

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MacWarrior · ClipBucket V5version=< 5.5.1 - 237

Published CVSS scores

7.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-20Improper Input Validation
T1070.004File Deletion

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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