CVE-2024-27087Network attack vector

Stored XSS via default Custom link type

Published Feb 26, 2024 · Updated Aug 2, 2024

Stored XSS in Content Folder Kirby 4.0.0 through 4.1.0 allows remote authenticated users to execute JavaScript through crafted links. The link field enables its Custom type by default and accepts javascript: URLs that site templates can emit without validation or sanitization. An authenticated Panel user must store the link, and another user or visitor must click it; the script then runs in the victim's browser context.

CVSS severity4.6
Medium
EPSS probability0.35%
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 Content Folder Kirby 4.0.0 through 4.1.0 allows remote authenticated users to execute JavaScript through crafted links. The link field enables its Custom type by default and accepts javascript: URLs that site templates can emit without validation or sanitization. An authenticated Panel user must store the link, and another user or visitor must click it; the script then runs in the victim's browser context.

The record

CVE
CVE-2024-27087
Published
Feb 26, 2024
Updated
Aug 2, 2024
Vendor
Content Folder
Product
Kirby
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=>= 4.0.0, < 4.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Content Folder · Kirbyversion=>= 4.0.0, < 4.1.1

Published CVSS scores

4.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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