CVE-2023-0989Network attack vector

CI/CD variable disclosure via fork configuration processing

Published Sep 29, 2023 · Updated Nov 20, 2025

Information disclosure in GitLab CE/EE 13.11 through 16.2.7, 16.3 through 16.3.4, and 16.4.0 lets remote authenticated users read CI/CD variables. Gitlab::Ci::YamlProcessor processes an attacker-controlled fork configuration and fetches external includes with unprotected variables in scope. Exploitation requires a public-project fork and a victim project member to visit a crafted blob, CI editor, or new-pipeline page.

CVSS severity4.3
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in GitLab CE/EE 13.11 through 16.2.7, 16.3 through 16.3.4, and 16.4.0 lets remote authenticated users read CI/CD variables. Gitlab::Ci::YamlProcessor processes an attacker-controlled fork configuration and fetches external includes with unprotected variables in scope. Exploitation requires a public-project fork and a victim project member to visit a crafted blob, CI editor, or new-pipeline page.

The record

CVE
CVE-2023-0989
Published
Sep 29, 2023
Updated
Nov 20, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-282, T1566.002
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 20, 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=0 <16.2.8
  2. Affected versionversion=16.3 <16.3.5
  3. Affected versionversion=16.4 <16.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=0 <16.2.8; version=16.3 <16.3.5; version=16.4 <16.4.1

Published CVSS scores

4.3GitLabCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-282Improper Ownership Management
T1566.002Phishing: Spearphishing Link

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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