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CVE-2026-100104

Server-Side Request Forgery (SSRF) in GitLab

3.5 LowFix available

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

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
Low
Integrity
None
Availability
None

Exploit likelihood

0.20%Unchanged since Oct 13, 2026
90%50%10%1%

What each source reports

CVE List Score used 3.5

Server-Side Request Forgery (SSRF) in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
CVE-2026-100104
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Weakness
CWE-918
Updated
2026-11-02
EUVDEUVD-2026-98212 3.5

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
EUVD-2026-98212
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-mv9g-3c33-88m6 3.5

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19...

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
GHSA-mv9g-3c33-88m6
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Weakness
CWE-918
Updated
2026-11-02
NVD 3.5

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
CVE-2026-100104
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Weakness
CWE-918
Updated
2026-11-02
OSV 3.5

Server-Side Request Forgery (SSRF) in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
CVE-2026-100104
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Weakness
CWE-918
Updated
2026-11-02
OSVUBUNTU-CVE-2026-100104 3.5

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
UBUNTU-CVE-2026-100104
CVSS 3.1
3.5 LowCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
Updated
2026-11-02
OSVBIT-gitlab-2026-100104 No score

Server-Side Request Forgery (SSRF) in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Record
BIT-gitlab-2026-100104
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gitlab
Bitnami
10.3.0 up to 19.2.8, 19.3.0 up to 19.3.5, 19.4.0 up to 19.4.2
19.2.819.3.519.4.2
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

History

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

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

In short

CVE-2026-100104 is a low vulnerability (CVSS 3.5) in Gitlab, published October 13, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.20%, the 9th percentile. Fixed in gitlab 19.2.8.

References

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