Low · CVSS 3.5CVE-2026-100104

Server-Side Request Forgery (SSRF) in GitLabCVE-2026-100104

Answer in brief

CVE-2026-100104 records a Low severity (CVSS 3.5) vulnerability in Server-Side Request Forgery (SSRF) in GitLab. The current sources do not mark it as known exploited. The current feed maps GitLab/GitLab (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 13, 2026Updated Oct 13, 2026Source checked Oct 13, 2026First seen by HOL Oct 13, 2026Material review Oct 13, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 3.5
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 3.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps GitLab/GitLab (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
GitLab/GitLabgeneric	>=10.3 <19.2.8 \|\| >=19.3 <19.3.5 \|\| >=19.4 <19.4.2	19.2.8, 19.3.5, 19.4.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for GitLab/GitLab.
Review the reported fix. Source-reported solution: Upgrade to versions 19.2.8, 19.3.5, 19.4.2 or above.

Evidence timeline and material changes

Published upstream
Oct 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 13, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 13, 2026

Sources and claim methodology

Upstream source description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time-of-use race condition in URL validation during repository import operations.

Quoted source text, attributed separately from HOL analysis.