CVE-2024-5528Public exploitNetwork attack vector

Subdomain takeover via unverified custom domain serving

Published Feb 5, 2025 · Updated Feb 5, 2025

Incorrect comparison in GitLab Pages allows remote authenticated users to take over custom subdomains on affected GitLab CE/EE instances. Pages serves content for a newly added custom domain during a seven-day verification window without first confirming control whenever a dangling domain points to the instance. Exploitation requires an account and victim interaction with the hijacked hostname, where attacker-controlled content can support phishing or cookie theft.

CVSS severity3.5
Low
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect comparison in GitLab Pages allows remote authenticated users to take over custom subdomains on affected GitLab CE/EE instances. Pages serves content for a newly added custom domain during a seven-day verification window without first confirming control whenever a dangling domain points to the instance. Exploitation requires an account and victim interaction with the hijacked hostname, where attacker-controlled content can support phishing or cookie theft.

The record

CVE
CVE-2024-5528
Published
Feb 5, 2025
Updated
Feb 5, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-697, CWE-1023, T1584.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.0 <16.11.6
  2. Affected versionversion=17.0 <17.0.4
  3. Affected versionversion=17.1 <17.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=0.0 <16.11.6; version=17.0 <17.0.4; version=17.1 <17.1.2

Published CVSS scores

5.4NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
3.5GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/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 exploitPublished

Weakness, pattern, technique

CWE-697Incorrect Comparison
CWE-1023Incomplete Comparison with Missing Factors
T1584.001Compromise Infrastructure: Domains

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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