CVE-2026-87719

criticalpriority · track · 0EPSS 0.006 · 46 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.57% (46th) EPSS

CVSS 9.9 · critical

Is it mine?

15 products

Check your exposure

Who says so?

3 sources

cert_bund · nvd · osv

EPSS · scored 2026-10-22

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 before 18.11.12, 19.0 before 19.0.9, 19.1 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could allow an authenticated user with Duo Chat access to obtain Advanced Search instance configurations and sensitive credentials using a specially crafted GraphQL subscription argument to bypass serialization and perform server object lookup.

cvss

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

9.9

010

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

v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Hsecondary · cve@gitlab.comexploitability 3.1 · impact 6

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/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-502US

affected products (15)

Products and version ranges known to be affected.

Open Source GitLab <18.11.12all versionscert_bundDE
Open Source GitLab <19.0.9all versionscert_bundDE
Open Source GitLab< 18.11.12cert_bundDE
Open Source GitLab< 19.0.9cert_bundDE
Open Source GitLab< 19.1.8cert_bundDE
Open Source GitLab< 19.2.6cert_bundDE
Open Source GitLab< 19.3.2cert_bundDE
gitlab gitlab18.3.0 → 18.11.12nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab19.0.0 → 19.0.9nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab19.1.0 → 19.1.8nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab19.2.0 → 19.2.6nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
gitlab gitlab19.3.0 → 19.3.2nvdUScpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Bitnami gitlab18.3.0 → 19.1.8osvUSpkg:bitnami/gitlab
Bitnami gitlab19.2.0 → 19.2.6osvUSpkg:bitnami/gitlab
Bitnami gitlab19.3.0 → 19.3.2osvUSpkg:bitnami/gitlab

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3315GitLab: Mehrere SchwachstellenDeutsch2026-09-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in GitLab ausnutzen, um beliebigen Code auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, sensible Informationen oder Anmeldedaten offenzulegen, Daten zu manipulieren, Cross-Site-Scripting-Angriffe durchzuführen oder Denial-of-Service-Zustände zu verursachen.
BIT-gitlab-2026-87719Deserialization of Untrusted Data in GitLab2026-09-25vendor · osvUS
GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 before 18.11.12, 19.0 before 19.0.9, 19.1 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could allow an authenticated user with Duo Chat access to obtain Advanced Search instance configurations and sensitive credentials using a specially crafted GraphQL subscription argument to bypass serialization and perform server object lookup.

sources

Which sources assert this record, and when.

cert_bund nvd osv NVD CVE.org MITRE

published 2026-09-12modified 2026-09-28

references (2) nvd

External citations — patches, advisories, analysis.

https://gitlab.com/gitlab-org/gitlab/-/work_items/628160Broken Link
https://hackerone.com/reports/4012289Permissions Required

scry

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