CVE-2025-30821Network attack vector

Unauthenticated access to restricted functionality

Published Mar 27, 2025 · Updated Apr 28, 2026

Missing authorization in H5PxAPIkatchu 0.4.14 and earlier allows remote attackers to invoke access-controlled plugin functionality. Patchstack and the upstream release notes do not disclose the affected function, request field, or operation that omits the authorization check. No authentication or user interaction is required; the published record identifies service interruption without specifying whether it causes a hang, crash, or another outage.

CVSS severity5.3
Medium
EPSS probability0.57%
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 H5PxAPIkatchu 0.4.14 and earlier allows remote attackers to invoke access-controlled plugin functionality. Patchstack and the upstream release notes do not disclose the affected function, request field, or operation that omits the authorization check. No authentication or user interaction is required; the published record identifies service interruption without specifying whether it causes a hang, crash, or another outage.

The record

CVE
CVE-2025-30821
Published
Mar 27, 2025
Updated
Apr 28, 2026
Vendor
SNORDIAN
Product
H5PxAPIkatchu
Classifications
CWE-862, CAPEC-1, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=0 <=0.4.14 changes=[{"at":"0.4.15","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SNORDIAN · H5PxAPIkatchuversion=0 <=0.4.14 changes=[{"at":"0.4.15","status":"unaffected"}]

Published CVSS scores

5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-1Accessing Functionality Not Properly Constrained by ACLs
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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