CVE-2021-24902Network attack vector

Stored XSS via unescaped Publish ID setting

Published Dec 27, 2021 · Updated Aug 3, 2024

Stored XSS in the Typebot WordPress plugin before 1.4.3 allows remote authenticated users with administrator access to inject script. The settings handler stores the Publish ID without sanitization, and the admin panel renders it without output escaping. Administrator access and later interaction with the affected admin panel are required; injected script executes in that viewer's browser.

CVSS severity4.8
Medium
EPSS probability0.60%
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 the Typebot WordPress plugin before 1.4.3 allows remote authenticated users with administrator access to inject script. The settings handler stores the Publish ID without sanitization, and the admin panel renders it without output escaping. Administrator access and later interaction with the affected admin panel are required; injected script executes in that viewer's browser.

The record

CVE
CVE-2021-24902
Published
Dec 27, 2021
Updated
Aug 3, 2024
Vendor
Typebot
Product
Typebot
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=1.4.3 <1.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Typebot · Typebotversion=1.4.3 <1.4.3

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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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