CVE-2026-2440Network attack vector

Admin-context stored XSS via decoded survey results

Published Mar 21, 2026 · Updated Mar 21, 2026

Stored XSS in Devsoft Baltic OÜ SurveyJS Survey Creator 2.5.3 and earlier allows remote attackers to run script in an administrator's browser. The result-submission handler accepts HTML-encoded survey data without sufficient sanitization, and the results view decodes and emits it as executable HTML. A public survey exposes the submission nonce; exploitation requires an administrator to view the stored result and permits script actions within that administrator context.

CVSS severity7.2
High
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Devsoft Baltic OÜ SurveyJS Survey Creator 2.5.3 and earlier allows remote attackers to run script in an administrator's browser. The result-submission handler accepts HTML-encoded survey data without sufficient sanitization, and the results view decodes and emits it as executable HTML. A public survey exposes the submission nonce; exploitation requires an administrator to view the stored result and permits script actions within that administrator context.

The record

CVE
CVE-2026-2440
Published
Mar 21, 2026
Updated
Mar 21, 2026
Vendor
Devsoft Baltic OÜ
Product
SurveyJS Survey Creator
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 21, 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=* <=2.5.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Devsoft Baltic OÜ · SurveyJS Survey Creatorversion=* <=2.5.3

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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