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CVE-2026-4868

Authorization Bypass Through User-Controlled Key in GitLab

8.2 HighFix available

CVE-2026-4868 is a high vulnerability (CVSS 8.2) in Gitlab, published May 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in gitlab 18.10.7.

What does this mean?
Severity
8.2 HighCVSS 3.1, CVE List
Exploit chance
0.43%EPSS, 37th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
18.10.7gitlab +1 more

Description

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
None

Exploit likelihood

0.43%Up 0.4 points since May 28, 2026
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gitlab
Bitnami
18.8.0 up to 18.10.7, 18.11.0 up to 18.11.4, 19.0.0 up to 19.0.2
18.10.718.11.419.0.2
gitlab
Ubuntu:16.04:LTS
All versions, plus listed versions
8.4.3+dfsg-98.4.3+dfsg-128.5.8+dfsg-5
None known

What each source reports

CVE List Score used8.2

Authorization Bypass Through User-Controlled Key in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
CVE-2026-4868
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness
CWE-639
Updated
2026-11-02
EUVDEUVD-2026-326208.2

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
EUVD-2026-32620
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-64q9-48cg-f6vv8.2

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18...

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
GHSA-64q9-48cg-f6vv
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness
CWE-639
Updated
2026-11-02
NVD8.2

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
CVE-2026-4868
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness
CWE-639
Updated
2026-11-02
OSV8.2

Authorization Bypass Through User-Controlled Key in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
CVE-2026-4868
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness
CWE-639
Updated
2026-11-02
OSVUBUNTU-CVE-2026-48688.2

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
UBUNTU-CVE-2026-4868
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Updated
2026-11-02
OSVBIT-gitlab-2026-4868No score

Authorization Bypass Through User-Controlled Key in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 18.8 before 18.10.7, 18.11 before 18.11.4, and 19.0 before 19.0.1 that, under certain conditions, could have allowed an authenticated user to cause specific Duo AI workflows to run under another user's identity due to improper user identity resolution when triggering Duo AI workflow runners.

Record
BIT-gitlab-2026-4868
Updated
2026-11-02

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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