CVE-2022-24799Network attack vector

Account takeover via unescaped code-block content

Published Apr 20, 2022 · Updated Apr 23, 2025

Cross-site scripting in Wire Web App before 2022-03-30-production.0 allows remote attackers to execute JavaScript through a viewed message. The renderMessage code-highlighting path returned a mention-containing code block without escaping it, allowing attacker-controlled HTML into the rendered page. The recipient must receive and view the malicious message; execution occurs in the recipient's session and grants control of the account.

CVSS severity9.6
Critical
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Wire Web App before 2022-03-30-production.0 allows remote attackers to execute JavaScript through a viewed message. The renderMessage code-highlighting path returned a mention-containing code block without escaping it, allowing attacker-controlled HTML into the rendered page. The recipient must receive and view the malicious message; execution occurs in the recipient's session and grants control of the account.

The record

CVE
CVE-2022-24799
Published
Apr 20, 2022
Updated
Apr 23, 2025
Vendor
Wire Swiss GmbH
Product
Wire Web App
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=< 2022-03-30-production.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Wire Swiss GmbH · Wire Web Appversion=< 2022-03-30-production.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
9.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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
Privilegesunauthenticated
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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