CVE-2023-2001Public exploitNetwork attack vector

Malicious source download via protected-tag spoofing

Published Jun 7, 2023 · Updated Jan 7, 2025

Tag spoofing in GitLab before 15.10.8, 15.11 through 15.11.6, or 16.0 through 16.0.1 allows remote authenticated users to bypass tag protection. The tag-creation path accepts a fully qualified refs/tags name, after which a source archive request can return content from the same-named attacker-controlled branch. Project access sufficient to create a branch is required; integrity is lost when the spoofed protected tag's source archive is downloaded.

CVSS severity4.3
Medium
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Tag spoofing in GitLab before 15.10.8, 15.11 through 15.11.6, or 16.0 through 16.0.1 allows remote authenticated users to bypass tag protection. The tag-creation path accepts a fully qualified refs/tags name, after which a source archive request can return content from the same-named attacker-controlled branch. Project access sufficient to create a branch is required; integrity is lost when the spoofed protected tag's source archive is downloaded.

The record

CVE
CVE-2023-2001
Published
Jun 7, 2023
Updated
Jan 7, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-290, T1036
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 7, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 7, 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=>=0.0, <15.10.8
  2. Affected versionversion=>=15.11, <15.11.7
  3. Affected versionversion=>=16.0, <16.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GitLab · GitLabversion=>=0.0, <15.10.8; version=>=15.11, <15.11.7; version=>=16.0, <16.0.2

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
4.3GitLab Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1036Masquerading

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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