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Back to active CVEs
High · CVSS 8.5CVE-2023-3399

Insertion of Sensitive Information Into Sent Data in GitLabCVE-2023-3399

Answer in brief

CVE-2023-3399 records a High severity (CVSS 8.5) vulnerability in Insertion of Sensitive Information Into Sent Data 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 Nov 6, 2023Updated Oct 28, 2026Source checked Oct 28, 2026First seen by HOL Oct 28, 2026Material review Oct 28, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.5. 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
PackageAffected rangeFixed version
GitLab/GitLabgeneric>=11.6 <16.3.6 || >=16.4 <16.4.2 || >=16.5 <16.5.116.3.6, 16.4.2, 16.5.1

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for GitLab/GitLab.
  2. 2Review the reported fix. Source-reported solution: Upgrade to versions 16.5.1, 16.4.2, 16.3.6 or above.

Evidence timeline and material changes

  1. Published upstream

    Nov 6, 2023

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • Source referencegitlab.com
  • Source referencehackerone.com
Upstream source description

An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress Contact Form by Supsystic plugin <= 1.10.5 - Sensitive Data Exposure vulnerabilityAlso CWE-201

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-201
Source
CVE List V5
Source checked
Oct 28, 2026
References
2 linked sources
Open source record