CVE-2026-18252

highpriority · track · 32EPSS 0.005 · 44 %ileDERUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.52% (44th) EPSS

CVSS 8.1 · high

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

fstec_bdu · cert_bund · nvd · osv

EPSS · scored 2026-10-27

GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source.

cvss

Technical severity, 0–10. One row per scoring source.

8.1

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 5.2

v3.17.3highAV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · cve@gitlab.comexploitability 2.1 · impact 5.2

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-829USCWE-829US

affected products (15)

Products and version ranges known to be affected.

Open Source GitLab <19.1.7all versionscert_bundDE
Open Source GitLab <19.2.5all versionscert_bundDE
Open Source GitLab <19.3.1all versionscert_bundDE
Open Source GitLab< 19.1.7cert_bundDE
Open Source GitLab< 19.2.5cert_bundDE
Open Source GitLab< 19.3.1cert_bundDE
GitLab Inc. Gitlab18.9.0 → 19.1.7fstec_bduRU
GitLab Inc. Gitlab19.2.0 → 19.2.5fstec_bduRU
GitLab Inc. Gitlab19.3.0 → 19.3.1fstec_bduRU
gitlab gitlab18.9.0 → 19.1.7nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab19.2.0 → 19.2.5nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab= 19.3.0nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Bitnami gitlab18.9.0 → 19.1.7osvUSpkg:bitnami/gitlab
Bitnami gitlab19.2.0 → 19.2.5osvUSpkg:bitnami/gitlab
Bitnami gitlab19.3.0 → 19.3.1osvUSpkg:bitnami/gitlab

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3029GitLab: Mehrere SchwachstellenDeutsch2026-08-25csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GitLab ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Daten zu manipulieren und um Sicherheitsvorkehrungen zu umgehen.
BIT-gitlab-2026-18252Inclusion of Functionality from Untrusted Control Sphere in GitLab2026-09-01vendor · osvUS
GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with developer-role permissions could have executed arbitrary commands in a CI context, due to the Claude agent processing configuration from a user-controlled source.

also known as (1)

Other names and identifiers for this entity.

BDU:2026-12783 fstec_bdu

sources

Which sources assert this record, and when.

fstec_bdu cert_bund nvd osv NVD CVE.org MITRE

published 2026-08-26modified 2026-08-31

references (3) nvd

External citations — patches, advisories, analysis.

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/Release NotesVendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/607342Issue Tracking
https://hackerone.com/reports/3863650Permissions RequiredThird Party Advisory

scry

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