CVE-2024-8853Network attack vector

Administrator escalation via trusted username substring

Published Sep 20, 2024 · Updated Apr 8, 2026

Privilege escalation in Medialibs Webo-facto 1.40 and earlier allows remote attackers to gain WordPress administrator access. The doSsoAuthentification function promotes any logged-in nonadministrator whose username contains '-wfuser', treating the user-chosen substring as proof of an SSO account. Unauthenticated registration must be enabled; registering that username and signing in is sufficient to obtain full site administration.

CVSS severity9.8
Critical
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

Privilege escalation in Medialibs Webo-facto 1.40 and earlier allows remote attackers to gain WordPress administrator access. The doSsoAuthentification function promotes any logged-in nonadministrator whose username contains '-wfuser', treating the user-chosen substring as proof of an SSO account. Unauthenticated registration must be enabled; registering that username and signing in is sufficient to obtain full site administration.

The record

CVE
CVE-2024-8853
Published
Sep 20, 2024
Updated
Apr 8, 2026
Vendor
Medialibs
Product
Webo-facto
Classifications
CWE-269, T1136
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=1.40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Medialibs · Webo-factoversion=0 <=1.40

Published CVSS scores

9.8WordfenceCVSS: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1136Create Account

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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