CVE-2018-9243

Name: CVE-2018-9243
Creator: NVD / NIST
Published: 2018-04-05T14:29:00.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.00%

Last modified Jun 17, 2026

CVE-2018-9243 is a vulnerability of currently unknown severity. GitLab Community and Enterprise Editions version 8.4 up to 10.4 are vulnerable to XSS because a lack of input validation in the merge request component leads to cross site scripting (specifically, filenames in changes tabs of merge requests). This is fixed in 10.6.3, 10.5.7, and 10.4.7.. EPSS estimates a 1.00% chance of exploitation in the next 30 days.

Description

GitLab Community and Enterprise Editions version 8.4 up to 10.4 are vulnerable to XSS because a lack of input validation in the merge request component leads to cross site scripting (specifically, filenames in changes tabs of merge requests). This is fixed in 10.6.3, 10.5.7, and 10.4.7.

Metrics

EPSS Probability

1.00%

58.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Gitlab	Gitlab	>= 8.4, < 10.4.7
Gitlab	Gitlab	>= 10.5.0, < 10.5.7
Gitlab	Gitlab	>= 10.6.0, < 10.6.3

References

https://about.gitlab.com/2018/04/04/security-release-gitlab-10-dot-6-dot-3-released/Vendor Advisory
https://gitlab.com/gitlab-org/gitlab-ce/issues/42028Exploit, Vendor Advisory
https://about.gitlab.com/2018/04/04/security-release-gitlab-10-dot-6-dot-3-released/Vendor Advisory
https://gitlab.com/gitlab-org/gitlab-ce/issues/42028Exploit, Vendor Advisory

Timeline

Published: Apr 5, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9243?

How severe is CVE-2018-9243?

Severity scoring for CVE-2018-9243 is pending analysis. The EPSS model estimates a 1.00% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9243?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-9243?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST