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Fencer Vulns
medium 4.8

CVE-2025-4760 json

Authenticated Stored Cross-Site Scripting (XSS) in Multiple WSO2 Products via API Document Upload in Publisher

published 2025-09-23 13 mo ago modified 2026-10-18 21 d ago also GHSA-cmjc-qp7j-xgwr , EUVD-2025-30893

cvss
4.8
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 8%
public exploits
0
none known

Summary

An authenticated stored cross-site scripting (XSS) vulnerability exists in multiple WSO2 products due to improper validation of user-supplied input during API document upload in the Publisher portal. A user with publisher privileges can upload a crafted API document containing malicious JavaScript, which is later rendered in the browser when accessed by other users.

A successful attack could result in redirection to malicious websites, unauthorized UI modifications, or exfiltration of browser-accessible data. However, session-related sensitive cookies are protected by the httpOnly flag, preventing session hijacking.

Patch / fix

  • maven org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.api 9.31.117
  • maven org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.publisher.v1 9.31.117
  • WSO2 WSO2 API Manager 3.2.0.428, 3.2.1.48, 4.1.0.209, 4.2.0.145, 4.3.0.60, 4.4.0.23, 4.5.0.7
  • WSO2 WSO2 API Control Plane 4.5.0.8
  • WSO2 WSO2 Universal Gateway 4.5.0.7
  • WSO2 WSO2 Traffic Manager 4.5.0.7
  • WSO2 WSO2 Carbon API Management API 6.7.206.559, 6.7.210.48, 9.20.74.365, 9.28.116.321, 9.29.120.163, 9.30.67.80, 9.31.86.30, 9.31.117

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
13 mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
GitHub 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.api
<9.31.117
9.31.117
maven org.wso2.carbon.apimgt:org.wso2.carbon.apimgt.rest.api.publisher.v1
<9.31.117
9.31.117

Affected products

  • WSO2 WSO2 API Manager
  • WSO2 WSO2 API Control Plane
  • WSO2 WSO2 Universal Gateway
  • WSO2 WSO2 Traffic Manager
  • WSO2 WSO2 Carbon API Management API

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.