6.4

CVE-2026-4103: wso2 wso2 api control plane Cross-site Scripting

CVSS: 6.4v3.1MediumDeferred
Published 14-09-2026Last modified 14-09-2026
Open JSON

Vulnerability summary

CVE-2026-4103 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in wso2 wso2 api control plane. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.4% of scored vulnerabilities.

Overall risk
26/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.30%
0%100%
Low · +0.12 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-09-2026
    PublishedVulnerability first disclosed.
  2. 14-09-2026
    Last modifiedVulnerability information updated.

Description

Insufficient HTML sanitization in the Publisher Portal and Developer Portal allows untrusted user input to be rendered without proper encoding or neutralization. This enables the injection and execution of malicious JavaScript when affected API documents are viewed. Successful exploitation may result in the execution of malicious scripts within the user's browser context when viewing API documentation. Users with permissions to access the API documentation through these portals may be impacted, potentially allowing attackers to perform actions on behalf of the user, depending on their session privileges.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.30%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

+0.12 pp

From 0.18% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.30%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Wso22 products
  • wso2 api control plane≥ 4.5.0, < 4.5.0.55 | ≥ 4.6.0, < 4.6.0.19
  • wso2 api manager≥ 3.2.0, < 3.2.0.470 | ≥ 3.2.1, < 3.2.1.89 | ≥ 4.1.0, < 4.1.0.254 | ≥ 4.2.0, < 4.2.0.194 | ≥ 4.3.0, < 4.3.0.105 | ≥ 4.4.0, < 4.4.0.69 | ≥ 4.5.0, < 4.5.0.54 | ≥ 4.6.0, < 4.6.0.18

1 vendor · 2 products

References

1 links