Gainsight Assist Parameters error_description cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Gainsight Assist. This affects an unknown part of the component Parameters Handler. The manipulation of the argument error_description results in cross site scripting. This vulnerability was named CVE-2026-31382. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Gainsight Assist (the affected version unknown). It has been classified as problematic. Affected is an unknown part of the component Parameters Handler. The manipulation of the argument error_description with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

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

The weakness was presented by Christopher O'Boyle. The advisory is shared for download at rapid7.com. This vulnerability is traded as CVE-2026-31382 since 03/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (rapid7): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/09/2026 CVE reserved
03/20/2026 +11 days Advisory disclosed
03/20/2026 +0 days VulDB entry created
03/26/2026 +6 days VulDB entry last update

Sourcesinfo

Advisory: rapid7.com
Researcher: Christopher O'Boyle
Status: Not defined

CVE: CVE-2026-31382 (🔒)
GCVE (CVE): GCVE-0-2026-31382
GCVE (VulDB): GCVE-100-352068

Entryinfo

Created: 03/20/2026 14:59
Updated: 03/26/2026 18:09
Changes: 03/20/2026 14:59 (63), 03/26/2026 18:09 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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