Security advisory
A reflected cross-site scripting (XSS) vulnerability exists in the authentication endpoints of multiple WSO2 products due to a lack of output encoding. A malicious actor can inject arbitrary JavaScript payloads into the authentication endpoint, which are reflected back in the response, enabling browser-based attacks. Exploitation may result in redirection to malicious websites, UI manipulation, or unauthorized data access from the victim’s browser. However, session-related cookies are protected with the httpOnly flag, which mitigates session hijacking via this vector.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-5770
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:13 UTC · Revision 1
Source evidence
A reflected cross-site scripting (XSS) vulnerability exists in the authentication endpoints of multiple WSO2 products due to a lack of output encoding. A malicious actor can inject arbitrary JavaScript payloads into the authentication endpoint, which are reflected back in the response, enabling browser-based attacks. Exploitation may result in redirection to malicious websites, UI manipulation, or unauthorized data access from the victim’s browser. However, session-related cookies are protected with the httpOnly flag, which mitigates session hijacking via this vector.
osv:CVE-2025-5770
Complete source record
{
"id": "7f16a0a587a825285e342bdc3f153495608a75f602b45bd0558877ff3664bddd",
"url": "https://osv.dev/vulnerability/CVE-2025-5770",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-5770",
"summary": "A reflected cross-site scripting (XSS) vulnerability exists in the authentication endpoints of multiple WSO2 products due to a lack of output encoding. A malicious actor can inject arbitrary JavaScript payloads into the authentication endpoint, which are reflected back in the response, enabling browser-based attacks. Exploitation may result in redirection to malicious websites, UI manipulation, or unauthorized data access from the victim’s browser. However, session-related cookies are protected with the httpOnly flag, which mitigates session hijacking via this vector.",
"evidence": "osv:CVE-2025-5770",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2025-5770",
"aliases": [
"CVE-2025-5770"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wso2/product-apim",
"type": "GIT",
"events": [
{
"introduced": "572610e8e6564a647044bdb454eda658e1253352"
},
{
"last_affected": "4e9b0158d1d7e83f1599dbc906ae7e968520592c"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wso2:api_manager:4.2.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.2.0-NA"
},
{
"last_affected": "4.2.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:wso2:api_manager:4.3.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.3.0-NA"
},
{
"last_affected": "4.3.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:wso2:api_manager:4.4.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.4.0-NA"
},
{
"last_affected": "4.4.0-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:wso2:api_manager:4.5.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "4.5.0-NA"
},
{
"last_affected": "4.5.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"4.2.0-NA",
"4.3.0-NA",
"4.4.0-NA",
"4.5.0-NA",
"v4.5.0-rc2",
"v4.5.0",
"v4.5.0-gw-rc2",
"v4.5.0-gw",
"v4.5.0-tm-rc2",
"v4.5.0-tm",
"v4.5.0-acp-rc2",
"v4.5.0-acp",
"v4.5.0-rc",
"v4.5.0-gw-rc",
"v4.5.0-tm-rc",
"v4.5.0-acp-rc",
"v4.5.0-beta",
"v4.5.0-gw-beta",
"v4.5.0-tm-beta",
"v4.5.0-acp-beta",
"v4.5.0-acp-alpha",
"v4.5.0-tm-alpha",
"v4.5.0-gw-alpha",
"v4.5.0-m2",
"v4.5.0-acp-m1",
"v4.5.0-tm-m1",
"v4.5.0-gw-m1",
"v4.5.0-m1",
"v4.3.0-rc2",
"v4.3.0",
"v4.4.0-rc2",
"v4.4.0",
"v4.4.0-rc",
"v4.4.0-beta",
"v4.4.0-alpha",
"v4.4.0-m1",
"v4.3.0-rc",
"v4.3.0-beta",
"v4.3.0-alpha2",
"v4.3.0-alpha",
"v4.3.0-m2",
"v4.2.0-rc2",
"v4.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-5770.json"
}
}
],
"modified": "2026-10-27T02:45:23.304836991Z",
"provider": "osv",
"references": [
"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2025-4270/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:wso2:api_control_plane:4.5.0:-:*:*:*:*:*:*"
],
"vendor_product": "wso2:api_control_plane",
"extracted_events": [
{
"range": [
{
"introduced": "4.5.0-NA"
},
{
"last_affected": "4.5.0-NA"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:wso2:identity_server:6.0.0:-:*:*:*:*:*:*",
"cpe:2.3:a:wso2:identity_server:6.1.0:-:*:*:*:*:*:*",
"cpe:2.3:a:wso2:identity_server:7.0.0:-:*:*:*:*:*:*",
"cpe:2.3:a:wso2:identity_server:7.1.0:-:*:*:*:*:*:*"
],
"vendor_product": "wso2:identity_server",
"extracted_events": [
{
"range": [
{
"introduced": "6.0.0-NA"
},
{
"last_affected": "6.0.0-NA"
},
{
"introduced": "6.1.0-NA"
},
{
"last_affected": "6.1.0-NA"
},
{
"introduced": "7.0.0-NA"
},
{
"last_affected": "7.0.0-NA"
},
{
"introduced": "7.1.0-NA"
},
{
"last_affected": "7.1.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2025-5770",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460105,
"published_at": "2025-11-05T19:16:01.88+00:00"
}