Reliance on Reverse DNS Resolution for a Security-Critical Action in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 8.3 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1 that under certain conditions could have allowed an authenticated user with maintainer-role permissions to make requests to internal network resources through mirror synchronization due to improper URL validation.
- Published
- Jun 25, 2026
- Updated
- Jun 26, 2026
- EPSS
- 0.2% · 15th percentile
- CWE
- CWE-350
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Report tools
Action score
12
Monitor
Low priority for now.
- CVSS
- 12 / 40 · 3.1 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 3.1
- CNA · GitLab
- 0.0
- 3.1 point gap
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| gitlab | gitlab | cpe:2.3:a:gitlab:gitlab |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- gitlab gitlab8.3.0 and later · before 18.11.6
- gitlab gitlab19.0.0 and later · before 19.0.3
- gitlab gitlab19.1.0
Versions reported by the vendor
Affected version ranges reported by the assigning authority (GitLab). Independent of NVD's CPE analysis and usually ahead of it.
GitLab GitLab
- 8.3 and later · before 18.11.6affected · semver
- 19.0 and later · before 19.0.3affected · semver
- 19.1 and later · before 19.1.1affected · semver
Same product
gitlab: all recordsOther highest-scoring records for the same primary product.
- CVE-2021-22205An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9.KEV100Now
- CVE-2026-85706Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLabKEV98Now
- CVE-2023-7028Weak Password Recovery Mechanism for Forgotten Password in GitLabKEV97Now
- CVE-2021-22175When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versionsKEV85Now
- CVE-2021-39935An issue has been discovered in GitLab CE/EE affecting all versions starting from 10.5 before 14.3.6, all versions starting from 14.4 beforeKEV71This week
- CVE-2022-2992A vulnerability in GitLab CE/EE affecting all versions from 11.10 prior to 15.1.6, 15.2 to 15.2.4, 15.3 to 15.3.2 allows an authenticated us65This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| GitLab GitLab | 18.11.6 | Vendor (CNA) |
| GitLab GitLab | 19.0.3 | Vendor (CNA) |
| GitLab GitLab | 19.1.1 | Vendor (CNA) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-26-0447 · Jun 25, 2026(GitLab CE/EE Güvenlik Bildirimi )
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-350 · Reliance on Reverse DNS Resolution for a Security-Critical ActionCVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- docs.gitlab.com/releases/patches/patch-release-gitlab-19-1-1-released/
- gitlab.com/gitlab-org/gitlab/-/work_items/594321
Vendor advisories and official records. Exploit/PoC links are deliberately left out.