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Fencer Vulns
medium 6.1

CVE-2024-5139 json

Cross-Site Scripting via Authentication Endpoint in Multiple WSO2 Products Enables UI Manipulation and Redirection

published 2026-10-21 19 d ago modified 2026-10-30 9 d ago also EUVD-2024-55810

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits
0
none known

Summary

The Authentication Endpoint accepts user-supplied input without sufficient encoding, allowing for the injection of malicious JavaScript payloads. This vulnerability can be triggered by submitting crafted input to the Authentication Endpoint.

Successful exploitation allows an attacker to redirect the user's browser to a malicious website, modify the web page's user interface, or extract sensitive information from the browser. However, due to the `httpOnly` flag on session-related cookies, session hijacking is not possible.

Patch / fix

  • WSO2 WSO2 Enterprise Integrator 6.6.0.204
  • WSO2 WSO2 Identity Server 5.10.0.310, 6.0.0.212, 6.1.0.195, 7.0.0.64
  • WSO2 WSO2 API Manager 3.1.0.286, 3.2.0.376, 3.2.1.10, 4.0.0.299, 4.1.0.159, 4.2.0.91, 4.3.0.6
  • WSO2 WSO2 Open Banking AM 2.0.0.336
  • WSO2 WSO2 Identity Server as Key Manager 5.10.0.306
  • WSO2 WSO2 Open Banking IAM 2.0.0.357
  • WSO2 WSO2 Carbon User Management UI 5.14.127.6, 5.17.5.273, 5.17.118.3, 5.18.187.260, 5.18.248.12, 5.23.8.191, 5.24.8.3, 5.25.92.99, 5.25.705.3, 7.0.78.43

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
9 d ago

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

  • WSO2 WSO2 Enterprise Integrator
  • WSO2 WSO2 Identity Server
  • WSO2 WSO2 API Manager
  • WSO2 WSO2 Open Banking AM
  • WSO2 WSO2 Identity Server as Key Manager
  • WSO2 WSO2 Open Banking IAM
  • WSO2 WSO2 Carbon User Management UI

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.