Security readout for executives and security teams
Plain-English summary
This GitLab flaw could let a remote attacker see sensitive issue data, comments, and project titles they should not access. It affects GitLab Community and Enterprise Edition releases before the listed fixed versions. The main business risk is unauthorized disclosure of internal project information, not system takeover.
Executive priority
Treat as high priority for any old or unmaintained GitLab deployment. The risk is confidentiality loss from project management data, which may expose internal plans, vulnerabilities, customers, or operational details.
Technical view
CVE-2018-17449 is an insecure direct object reference in GitLab CE/EE Events API. The CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, indicating network access, low complexity, no privileges, and high confidentiality impact. CWE-639 is listed.
Likely exposure
Exposure is most likely on self-managed GitLab CE/EE instances before 11.1.7, 11.2.x before 11.2.4, or 11.3.x before 11.3.1, especially if reachable from untrusted networks.
Exploitation context
The provided sources do not show CISA KEV listing or active exploitation evidence. The CVSS vector and description indicate unauthenticated remote information disclosure through an API authorization weakness.
Researcher notes
Evidence is limited to the CVE description, CVSS metadata, CWE-639 mapping, and GitLab release references. The bundle lists affected CPEs as unavailable, so validation should rely on observed GitLab CE/EE version data.
Mitigation direction
- Upgrade GitLab CE/EE to 11.1.7, 11.2.4, 11.3.1, or a later supported release.
- Review GitLab’s October 1, 2018 security release guidance for branch-specific update direction.
- Reduce untrusted network exposure to self-managed GitLab where possible.
- Review access controls for sensitive projects, issues, and comments after patching.
Validation and detection
- Inventory all self-managed GitLab CE/EE instances and record exact versions.
- Confirm no instance remains below 11.1.7, 11.2.4, or 11.3.1.
- Review Events API access logs for unusual sensitive-data access patterns.
- Perform approved role-based access testing against the Events API after upgrade.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-639: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-17449 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.