CVE-2024-9164Public exploitNetwork attack vector

Unauthenticated pipeline execution via empty webhook secret

Published Oct 11, 2024 · Updated Oct 11, 2024

Authorization bypass in affected GitLab EE releases allows remote attackers to run pipelines on arbitrary branches without permission. For pull-mirrored projects, the mirror webhook lacks a configured secret, so an HMAC made with an empty key passes signature validation and runs a pipeline as the mirror user. Exposure requires a Premium pull-mirrored project; affected versions are 12.5 through 17.2.8, 17.3 through 17.3.4, and 17.4 through 17.4.1, and developer access can enable theft of the mirror user's CI job token.

CVSS severity9.6
Critical
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in affected GitLab EE releases allows remote attackers to run pipelines on arbitrary branches without permission. For pull-mirrored projects, the mirror webhook lacks a configured secret, so an HMAC made with an empty key passes signature validation and runs a pipeline as the mirror user. Exposure requires a Premium pull-mirrored project; affected versions are 12.5 through 17.2.8, 17.3 through 17.3.4, and 17.4 through 17.4.1, and developer access can enable theft of the mirror user's CI job token.

The record

CVE
CVE-2024-9164
Published
Oct 11, 2024
Updated
Oct 11, 2024
Vendor
GitLab
Product
GitLab
Classifications
T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 2024Record 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=12.5 <17.2.9
  2. Affected versionversion=17.3 <17.3.5
  3. Affected versionversion=17.4 <17.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=12.5 <17.2.9; version=17.3 <17.3.5; version=17.4 <17.4.2

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.6GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059Command and Scripting Interpreter

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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