What is CVE-2017-0923?

CVE-2017-0923 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-21.

How severe is CVE-2017-0923?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in GitLab

CVE-2017-0923

Gitlab Community Edition version 9.1 is vulnerable to lack of input validation in the IPython notebooks component resulting in persistent cross site scripting.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-03-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

GitLab — versions 9.5.10, 10.1.5, 10.2.5
GitLab Community And Enterprise Editions — versions 10.2.0 - 10.2.5 Fixed in 10.2.6, 10.3.0 - 10.3.3 Fixed in 10.3.4, 9.1.0 - 10.1.5 Fixed in 10.1.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

hackerone.com/reports/293740 (Permissions Required)
about.gitlab.com/2018/01/16/gitlab-10-dot-3-dot-4-released/ (Vendor Advisory)

Frequently asked questions

What is CVE-2017-0923?: CVE-2017-0923 is a medium-severity vulnerability in GitLab, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-03-21.
How severe is CVE-2017-0923?: Medium severity. CVSS v3 base score is 6.1 out of 10.