CVE-2021-47962Public exploitNetwork attack vector

Stored script execution via unsanitized profile fields

Published May 15, 2026 · Updated May 15, 2026

Stored cross-site scripting in Savsoft Quiz 5.0 allows remote authenticated users to execute script in other users' browsers. The edit_user endpoint stores HTML and JavaScript supplied in account-profile fields and later renders those values without effective output neutralization. A valid account is required to submit a payload, and execution occurs when another user views the affected profile, exposing that browser session's data and actions.

CVSS severity5.1
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Savsoft Quiz 5.0 allows remote authenticated users to execute script in other users' browsers. The edit_user endpoint stores HTML and JavaScript supplied in account-profile fields and later renders those values without effective output neutralization. A valid account is required to submit a payload, and execution occurs when another user views the affected profile, exposing that browser session's data and actions.

The record

CVE
CVE-2021-47962
Published
May 15, 2026
Updated
May 15, 2026
Vendor
TechKshetra Info Solutions Pvt. Ltd.
Product
Savsoft Quiz
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TechKshetra Info Solutions Pvt. Ltd. · Savsoft Quizversion=5.0

Published CVSS scores

5.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.4VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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