CVE-2025-46348Public exploitNetwork attack vector

Backup disclosure and disk exhaustion via public routes

Published Apr 29, 2025 · Updated Apr 30, 2025

Missing authorization in YesWiki before 4.5.4 allows remote attackers to create and download site backup archives without authentication. The archive API routes combine public and administrator ACL labels, so POST /api/archives starts a backup and GET /api/archives/{id} returns it without an administrator check. No account or user interaction is required; predictable timestamp-based archive names expose sensitive site data, while repeated creation can fill the server filesystem.

CVSS severity10.0
Critical
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in YesWiki before 4.5.4 allows remote attackers to create and download site backup archives without authentication. The archive API routes combine public and administrator ACL labels, so POST /api/archives starts a backup and GET /api/archives/{id} returns it without an administrator check. No account or user interaction is required; predictable timestamp-based archive names expose sensitive site data, while repeated creation can fill the server filesystem.

The record

CVE
CVE-2025-46348
Published
Apr 29, 2025
Updated
Apr 30, 2025
Vendor
YesWiki
Product
YesWiki
Classifications
CWE-287, CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 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=< 4.5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

YesWiki · YesWikiversion=< 4.5.4

Published CVSS scores

10.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
CWE-862Missing Authorization
T1190Exploit Public-Facing Application

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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