Answer in brief
CVE-2026-11854 records a Medium severity (CVSS 6.1) vulnerability in Cross-Site Scripting via Authentication Endpoint Error Message in Multiple WSO2 Products. The current sources do not mark it as known exploited. The current feed maps WSO2/WSO2 API Control Plane (generic), WSO2/WSO2 API Manager (generic), WSO2/WSO2 Identity Server (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps WSO2/WSO2 API Control Plane (generic), WSO2/WSO2 API Manager (generic), WSO2/WSO2 Identity Server (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| WSO2/WSO2 API Control Planegeneric | >=4.5.0 <4.5.0.66 || >=4.6.0 <4.6.0.30 || >=4.7.0 <4.7.0.1 | 4.5.0.66, 4.6.0.30, 4.7.0.1 |
| WSO2/WSO2 API Managergeneric | >=3.2.0 <3.2.0.480 || >=3.2.1 <3.2.1.99 || >=4.1.0 <4.1.0.265 || >=4.2.0 <4.2.0.205 || >=4.3.0 <4.3.0.117 || >=4.4.0 <4.4.0.80 || >=4.5.0 <4.5.0.65 || >=4.6.0 <4.6.0.29 || >=4.7.0 <4.7.0.1 | 3.2.0.480, 3.2.1.99, 4.1.0.265, 4.2.0.205, 4.3.0.117, 4.4.0.80, 4.5.0.65, 4.6.0.29, 4.7.0.1 |
| WSO2/WSO2 Identity Servergeneric | >=5.10.0 <5.10.0.399 || >=5.11.0 <5.11.0.446 || >=6.0.0 <6.0.0.272 || >=6.1.0 <6.1.0.274 || >=7.0.0 <7.0.0.155 || >=7.1.0 <7.1.0.65 || >=7.2.0 <7.2.0.26 | 5.10.0.399, 5.11.0.446, 6.0.0.272, 6.1.0.274, 7.0.0.155, 7.1.0.65, 7.2.0.26 |
Published upstream
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 28, 2026
The authentication endpoint generates an error message that includes reflected data directly from the request without sufficient sanitization or encoding. This allows an attacker to inject malicious scripts that can be executed in the context of a victim's browser. Successful exploitation enables an attacker to perform actions within the user's browser, such as redirecting the user to a malicious website, modifying the web page's user interface, or retrieving information. However, due to the httpOnly flag on session-related cookies, session hijacking or similar attacks are not possible.
Quoted source text, attributed separately from HOL analysis.