CVE-2026-10087 json
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
published 2026-06-11 4 mo ago modified 2026-09-08 2 mo ago also BIT-gitlab-2026-10087 , EUVD-2026-36223
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
GitLab has remediated an issue in GitLab EE affecting all versions from 17.1 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with developer-role permissions to execute arbitrary client-side code on behalf of a targeted user due to improper input sanitization in the Analytics Dashboard.
Patch / fix
- bitnami gitlab 18.10.8, 18.11.5, 19.0.2
- GitLab GitLab 18.10.8, 18.11.5, 19.0.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/3759090 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
| OSV | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=17.1.0, <18.10.8 >=18.11.0, <18.11.5 >=19.0.0, <19.0.2 |
18.10.8 18.11.5 19.0.2 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
hackerone.com
/reports/3759090
technical-description, exploit, permissions-required, web
-
gitlab.com
/gitlab-org/gitlab/-/work_items/601633
issue-tracking, report
-
about.gitlab.com
/releases/2026/06/10/patch-release-gitlab-19-0-2-released/
release-notes, article
-
nvd.nist.gov
/vuln/detail/CVE-2026-10087
web
Sources
- CVE List CVE-2026-10087
- NVD CVE-2026-10087
- OSV BIT-gitlab-2026-10087
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.