CVE-2025-0549Public exploitNetwork attack vector

Device OAuth bypass via focusable user-code input

Published May 9, 2025 · Updated May 9, 2025

Authentication bypass in GitLab CE/EE allows remote attackers to submit Device OAuth authorization forms through minimal user interaction. The Device OAuth confirmation form retains an id on its user_code input, so a crafted URL fragment focuses that field and Enter submits the form. The victim must be signed in and press Enter; full bypass additionally requires Tab and Enter, granting the requesting OAuth client the approved scope.

CVSS severity6.8
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in GitLab CE/EE allows remote attackers to submit Device OAuth authorization forms through minimal user interaction. The Device OAuth confirmation form retains an id on its user_code input, so a crafted URL fragment focuses that field and Enter submits the form. The victim must be signed in and press Enter; full bypass additionally requires Tab and Enter, granting the requesting OAuth client the approved scope.

The record

CVE
CVE-2025-0549
Published
May 9, 2025
Updated
May 9, 2025
Vendor
GitLab
Product
GitLab
Classifications
CWE-288, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2025CVE publishedPublication date reported by the CVE source.
  2. May 9, 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=17.10 <17.10.6
  2. Affected versionversion=17.11 <17.11.2
  3. Affected versionversion=17.3 <17.9.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

GitLab · GitLabversion=17.10 <17.10.6; version=17.11 <17.11.2; version=17.3 <17.9.8

Published CVSS scores

6.8GitLabCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-288Authentication Bypass Using an Alternate Path or Channel
T1204.001Malicious Link

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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