CVE-2024-22213Public exploitNetwork attack vector

Browser code execution via unsanitized comment HTML

Published Jan 18, 2024 · Updated Nov 13, 2024

Stored cross-site scripting in Nextcloud Deck 1.9.0 through 1.9.4 and 1.10.0 through 1.11.1 allows attackers to run code in a user's browser. CommentForm.vue's submit method re-emits comment HTML through the input and submit events, allowing markup to flow back into a contenteditable element instead of converting it to plain text. Exploitation requires a user to be tricked into sending the malicious comment, and the reported consequence is code execution in that user's browser rather than on the Nextcloud server.

CVSS severity5.4
Medium
EPSS probability0.51%
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 Nextcloud Deck 1.9.0 through 1.9.4 and 1.10.0 through 1.11.1 allows attackers to run code in a user's browser. CommentForm.vue's submit method re-emits comment HTML through the input and submit events, allowing markup to flow back into a contenteditable element instead of converting it to plain text. Exploitation requires a user to be tricked into sending the malicious comment, and the reported consequence is code execution in that user's browser rather than on the Nextcloud server.

The record

CVE
CVE-2024-22213
Published
Jan 18, 2024
Updated
Nov 13, 2024
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 13, 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=>= 1.10.0, < 1.11.2
  2. Affected versionversion=>= 1.9.0, < 1.9.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=>= 1.10.0, < 1.11.2; version=>= 1.9.0, < 1.9.5

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
0.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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