CVE-2026-9694 json
Improper Neutralization of Substitution Characters in GitLab
published 5mo ago modified 2mo ago also BIT-gitlab-2026-9694 , EUVD-2026-36224
- cvss
- 2.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 11%
- public exploits
- 0
- none known
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.9 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 unauthenticated user to impersonate the GitLab Support Bot and inject arbitrary content via a specially crafted Service Desk email reply due to improper neutralization in email template processing.
Patch / fix
- bitnami gitlab 18.10.8, 18.11.5, 19.0.2
- GitLab GitLab 18.10.8, 18.11.5, 19.0.2
Is CVE-2026-9694 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 5mo ago
Exploit prediction
0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- hackerone.com https://hackerone.com/reports/3685720 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 2.6 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N |
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| OSV | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=15.9.0, <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-153 Improper Neutralization of Substitution Characters
- Technology feeds
References
-
hackerone.com
/reports/3685720
technical-description, exploit, permissions-required, web
-
gitlab.com
/gitlab-org/gitlab/-/work_items/601330
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-2026-9694
web
Sources
- CVE List CVE-2026-9694
- NVD CVE-2026-9694
- OSV BIT-gitlab-2026-9694
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