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    CVE-2026-112212

    GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.3 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, under certain conditions, an unauthenticated user could have poisoned a shared cache's OAuth/OIDC discovery document to redirect certain flows to an externally controlled server, due to improper trust of user-supplied values when constructing endpoint URLs in cached discovery responses.

    Published:Oct 21, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 21, 2026
    EPSS Score:0.0019
    CVSS Score:7.5

    Affected Products

    Vendor
    Gitlab
    Product
    Gitlab

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-273 HTTP Response Smuggling
    CAPEC-33 HTTP Request Smuggling

    Related CVEs

    CVE-2026-110264 (CVSS 10) — An issue has been discovered in GitLab CE/EE affecting all versions from 7.0 before 18.11.13, 19.0 before 19.0…
    CVE-2026-12664 (CVSS 6.8) — GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.3.6, 19.4 before 19.…
    CVE-2026-13319 (CVSS 4.3) — GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.10 before 19.3.6, 19.4 before 19…
    CVE-2026-14288 (CVSS 3.1) — GitLab has remediated an issue in GitLab EE affecting all versions from 17.4 before 19.3.6, 19.4 before 19.4.3…
    CVE-2026-15723 (CVSS 8.2) — GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1 before 19.3.6, 19.4 before 19.…
    CVE-2026-16255 (CVSS 5.9) — GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.3.6, 19.4 before 19.4.3…
    CVE-2026-103515 (CVSS 2.7) — GitLab has remediated an issue in GitLab EE affecting all versions from 19.2 before 19.3.6, 19.4 before 19.4.3…
    CVE-2026-105711 (CVSS 3.5) — GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.0 before 19.3.6, 19.4 before 19.…
    CVE-2026-105777 (CVSS 4.3) — GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.6.5 before 19.3.6, 19.4 before 1…
    CVE-2026-112378 (CVSS 4.3) — GitLab has remediated an issue in GitLab EE affecting all versions from 17.8 before 19.3.6, 19.4 before 19.4.3…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High