CVE-2025-53534Public exploitNetwork attack vector

Remote code execution via inconsistent path normalization

Published Aug 5, 2025 · Updated Aug 6, 2025

Authentication bypass in AcePanel 2.3.19 through 2.5.5 allows remote attackers to access protected APIs through double-slash URLs. The must_login middleware tests r.URL.Path while chi routes the cleaned RoutePath, so //api requests evade the /api prefix check. The backend login path must be known and a session activated; versions 2.5.1 through 2.5.5 permit command execution and host takeover.

CVSS severity7.7
High
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in AcePanel 2.3.19 through 2.5.5 allows remote attackers to access protected APIs through double-slash URLs. The must_login middleware tests r.URL.Path while chi routes the cleaned RoutePath, so //api requests evade the /api prefix check. The backend login path must be known and a session activated; versions 2.5.1 through 2.5.5 permit command execution and host takeover.

The record

CVE
CVE-2025-53534
Published
Aug 5, 2025
Updated
Aug 6, 2025
Vendor
AcePanel
Product
AcePanel
Classifications
CWE-305, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=>= 2.3.19, < 2.5.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AcePanel · AcePanelversion=>= 2.3.19, < 2.5.6

Published CVSS scores

7.7GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-305Authentication Bypass by Primary Weakness
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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