CVE-2026-11854 (GCVE-0-2026-11854)
Vulnerability from cvelistv5
Published
2026-10-28 19:21
Modified
2026-10-28 19:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WSO2 | WSO2 API Manager |
Version: 3.2.0 < 3.2.0.480 Version: 3.2.1 < 3.2.1.99 Version: 4.1.0 < 4.1.0.265 Version: 4.2.0 < 4.2.0.205 Version: 4.3.0 < 4.3.0.117 Version: 4.4.0 < 4.4.0.80 Version: 4.5.0 < 4.5.0.65 Version: 4.6.0 < 4.6.0.29 Version: 4.7.0 < 4.7.0.1 |
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{
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"vendor": "WSO2",
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"status": "unknown",
"version": "0",
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},
{
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"status": "affected",
"version": "3.2.0",
"versionType": "custom"
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{
"lessThan": "3.2.1.99",
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{
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"status": "affected",
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{
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"status": "affected",
"version": "4.2.0",
"versionType": "custom"
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{
"lessThan": "4.3.0.117",
"status": "affected",
"version": "4.3.0",
"versionType": "custom"
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{
"lessThan": "4.4.0.80",
"status": "affected",
"version": "4.4.0",
"versionType": "custom"
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{
"lessThan": "4.5.0.65",
"status": "affected",
"version": "4.5.0",
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{
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"status": "affected",
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{
"defaultStatus": "unaffected",
"product": "WSO2 API Control Plane",
"vendor": "WSO2",
"versions": [
{
"lessThan": "4.5.0",
"status": "unknown",
"version": "0",
"versionType": "custom"
},
{
"lessThan": "4.5.0.66",
"status": "affected",
"version": "4.5.0",
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{
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{
"defaultStatus": "unaffected",
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"vendor": "WSO2",
"versions": [
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"status": "unknown",
"version": "0",
"versionType": "custom"
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{
"lessThan": "5.10.0.399",
"status": "affected",
"version": "5.10.0",
"versionType": "custom"
},
{
"lessThan": "5.11.0.446",
"status": "affected",
"version": "5.11.0",
"versionType": "custom"
},
{
"lessThan": "6.0.0.272",
"status": "affected",
"version": "6.0.0",
"versionType": "custom"
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{
"lessThan": "6.1.0.274",
"status": "affected",
"version": "6.1.0",
"versionType": "custom"
},
{
"lessThan": "7.0.0.155",
"status": "affected",
"version": "7.0.0",
"versionType": "custom"
},
{
"lessThan": "7.1.0.65",
"status": "affected",
"version": "7.1.0",
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},
{
"lessThan": "7.2.0.26",
"status": "affected",
"version": "7.2.0",
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],
"descriptions": [
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"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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\u0027s browser.\n\nSuccessful exploitation enables an attacker to perform actions within the user\u0027s browser, such as redirecting the user to a malicious website, modifying the web page\u0027s user interface, or retrieving information. However, due to the httpOnly flag on session-related cookies, session hijacking or similar attacks are not possible."
}
],
"value": "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\u0027s browser.\n\nSuccessful exploitation enables an attacker to perform actions within the user\u0027s browser, such as redirecting the user to a malicious website, modifying the web page\u0027s user interface, or retrieving information. However, due to the httpOnly flag on session-related cookies, session hijacking or similar attacks are not possible."
}
],
"impacts": [
{
"capecId": "CAPEC-23",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-23 CAPEC-23: Cross-site Scripting"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
"version": "3.1"
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"scenarios": [
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"value": "GENERAL"
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"problemTypes": [
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"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-28T19:21:33.216Z",
"orgId": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
"shortName": "WSO2"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4850/"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cspan style=\"background-color: transparent;\"\u003eFollow the instructions given on \u003c/span\u003e\u003ca target=\"_blank\" rel=\"nofollow\" href=\"https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4850/#solution\"\u003e\u003cspan style=\"background-color: transparent;\"\u003ehttps://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4850/#solution\u003c/span\u003e\u003c/a\u003e \u003cbr\u003e"
}
],
"value": "Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4850/#solution"
}
],
"source": {
"advisory": "WSO2-2025-4850",
"discovery": "INTERNAL"
},
"title": "Cross-Site Scripting via Authentication Endpoint Error Message in Multiple WSO2 Products",
"x_generator": {
"engine": "Vulnogram 0.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "ed10eef1-636d-4fbe-9993-6890dfa878f8",
"assignerShortName": "WSO2",
"cveId": "CVE-2026-11854",
"datePublished": "2026-10-28T19:21:33.216Z",
"dateReserved": "2026-06-10T08:38:33.407Z",
"dateUpdated": "2026-10-28T19:21:33.216Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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