CVE-2024-50477Public exploitNetwork attack vector

Unauthenticated account takeover via user ID impersonation

Published Oct 28, 2024 · Updated Apr 28, 2026

Authentication bypass in Stacks Mobile App Builder 5.2.3 and earlier allows remote attackers to take over any WordPress account by user ID. The receive_request_checkout() function trusts the mobile_co and uid query parameters and authenticates the specified user without verifying identity. A request with mobile_co=1 and a chosen uid returns that user's authentication cookie, including an administrator's.

CVSS severity9.8
Critical
EPSS probability8.12%
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 Stacks Mobile App Builder 5.2.3 and earlier allows remote attackers to take over any WordPress account by user ID. The receive_request_checkout() function trusts the mobile_co and uid query parameters and authenticates the specified user without verifying identity. A request with mobile_co=1 and a chosen uid returns that user's authentication cookie, including an administrator's.

The record

CVE
CVE-2024-50477
Published
Oct 28, 2024
Updated
Apr 28, 2026
Vendor
Stacks
Product
Stacks Mobile App Builder
Classifications
CWE-288, CAPEC-115, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 28, 2024CVE 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 <=5.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Stacks · Stacks Mobile App Builderversion=0 <=5.2.3

Published CVSS scores

9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8PatchstackCVSS: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-288Authentication Bypass Using an Alternate Path or Channel
CAPEC-115Authentication Bypass
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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