CVE-2025-54875Public exploitNetwork attack vector

Administrator account creation via unchecked registration field

Published Sep 29, 2025 · Updated Sep 29, 2025

Improper access control in FreshRSS 1.16.0 through 1.26.3 allows remote attackers to create an administrator account through registration. The public registration path in app/Controllers/userController.php reads the new_user_is_admin request field into is_admin without an access check. Registration must be enabled; successful exploitation grants administrative access to user data and instance controls.

CVSS severity9.8
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in FreshRSS 1.16.0 through 1.26.3 allows remote attackers to create an administrator account through registration. The public registration path in app/Controllers/userController.php reads the new_user_is_admin request field into is_admin without an access check. Registration must be enabled; successful exploitation grants administrative access to user data and instance controls.

The record

CVE
CVE-2025-54875
Published
Sep 29, 2025
Updated
Sep 29, 2025
Vendor
FreshRSS
Product
FreshRSS
Classifications
CWE-284, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 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=>= 1.16.0, < 1.27.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FreshRSS · FreshRSSversion=>= 1.16.0, < 1.27.0

Published CVSS scores

9.8GitHub, Inc.CVSS: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.

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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-284Improper Access Control
T1136Create Account

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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