# CVE-2025-5769: Reflected Cross-Site Scripting via Authentication Endpoint in Multiple WSO2 Products Allows Browser Redirection and UI Modification

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

The authentication endpoint does not properly encode user-supplied input before rendering it within the web page. This lack of output encoding allows an attacker to inject malicious JavaScript payloads into the authentication flow, which are then executed by the victim's browser.

By exploiting this vulnerability, an attacker can redirect the user's browser to a malicious website, modify the content of the web page displayed to the user, or exfiltrate information from the browser. However, due to the implementation of the httpOnly flag on session-related sensitive cookies, session hijacking and similar attacks are not possible.

## Remediation

- fix: Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4217/#solution (source: CNA: WSO2)

## Affected products and versions

- WSO2 / WSO2 API Control Plane: ≥ 4.5.0; < 4.5.0.11 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 API Manager: ≥ 0; < 3.2.0 (unknown, custom); ≥ 3.2.0; < 3.2.0.430 (affected, custom); ≥ 3.2.1; < 3.2.1.50 (affected, custom); ≥ 4.1.0; < 4.1.0.212 (affected, custom); ≥ 4.2.0; < 4.2.0.150 (affected, custom); ≥ 4.3.0; < 4.3.0.63 (affected, custom); ≥ 4.4.0; < 4.4.0.26 (affected, custom); ≥ 4.5.0; < 4.5.0.10 (affected, custom). Source: CNA: WSO2
- WSO2 / WSO2 Identity Server: ≥ 0; < 5.10.0 (unknown, custom); ≥ 5.10.0; < 5.10.0.359 (affected, custom); ≥ 5.11.0; < 5.11.0.404 (affected, custom); ≥ 6.0.0; < 6.0.0.237 (affected, custom); ≥ 6.1.0; < 6.1.0.234 (affected, custom); ≥ 7.0.0; < 7.0.0.107 (affected, custom); ≥ 7.1.0; < 7.1.0.12 (affected, custom). Source: CNA: WSO2

## Severity and prioritization

- CVSS 3.1: 6.1 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N; source: CNA: WSO2

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4217/ (CNA: WSO2; vendor-advisory)

## Provenance

- CNA: WSO2: https://www.cve.org/CVERecord?id=CVE-2025-5769; retrieved 2026-11-03; source updated 2026-11-03

Revision: 3f5b44ec34746c3ca6f891d1c1c17550199f474c617d564dc12b755fe1aaca26

Canonical: https://y2.dev/cve/CVE-2025-5769

## Agent and API access

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- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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