CVE-2026-15723 json
Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') in GitLab
published 2026-10-21 18 d ago modified 2026-11-04 4 d ago also BIT-gitlab-2026-15723 , EUVD-2026-107677
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 45%
- public exploits
- 0
- none known
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when OmniAuth SAML and LDAP auto-linking were both enabled, an authenticated user could have taken over an existing LDAP-backed account without any interaction from the targeted user, due to improper input sanitization in the LDAP email lookup path used during OmniAuth identity linking.
Patch / fix
- bitnami gitlab 19.3.6, 19.4.3, 19.5.1
- GitLab GitLab 19.3.6, 19.4.3, 19.5.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 16 d ago
Exploit prediction
0.54% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/3852192 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |
| OSV | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| bitnami | gitlab | >=10.1.0, <19.3.6 >=19.4.0, <19.4.3 >=19.5.0, <19.5.1 |
19.3.6 19.4.3 19.5.1 |
Affected products
- GitLab GitLab
Classification
- Weakness
-
- CWE-90 Improper Neutralization of Special Elements used in an LDAP Query
- Technology feeds
References
-
hackerone.com
/reports/3852192
technical-description, exploit, permissions-required, web
-
docs.gitlab.com
/releases/patches/patch-release-gitlab-19-5-1-released/
release-notes, vendor-advisory, advisory
-
gitlab.com
/gitlab-org/gitlab/-/work_items/605977
permissions-required, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-15723
web
Sources
- CVE List CVE-2026-15723
- NVD CVE-2026-15723
- OSV BIT-gitlab-2026-15723
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.