CVE-2026-31382

The error_description parameter is vulnerable to Reflected XSS. An attacker can bypass the domain's WAF using a Safari-specific onpagereveal payload.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remediations-cve-2026-31381-and-cve-2026-31382-30587	Vendor Advisory
https://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixed/	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gainsight:assist:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-20 14:16

Updated : 2026-06-17 10:33

NVD link : CVE-2026-31382

Mitre link : CVE-2026-31382

CVE.ORG link : CVE-2026-31382

JSON object : View

Products Affected

gainsight

assist

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2026-31382", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-31382", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-20T13:42:36.673080Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cve@rapid7.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 2.7, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.1, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.8}]}, "affected": [{"source": "cve@rapid7.com", "affectedData": [{"vendor": "Gainsight", "product": "Gainsight Assist", "versions": [{"status": "unknown", "version": "0", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-03-20T14:16:14.727", "references": [{"url": "https://communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remediations-cve-2026-31381-and-cve-2026-31382-30587", "tags": ["Vendor Advisory"], "source": "cve@rapid7.com"}, {"url": "https://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixed/", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@rapid7.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "cve@rapid7.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The error_description parameter is vulnerable to Reflected XSS. An attacker can bypass the domain's WAF using a Safari-specific onpagereveal payload."}, {"lang": "es", "value": "El par\u00e1metro error_description es vulnerable a XSS Reflejado. Un atacante puede eludir el WAF del dominio utilizando un payload onpagereveal espec\u00edfico de Safari."}], "lastModified": "2026-06-17T10:33:36.607", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gainsight:assist:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CEF026DD-1AD7-44D0-8960-A5DDAE4F1BDE"}], "operator": "OR"}]}], "sourceIdentifier": "cve@rapid7.com"}