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CVE-2026-13113· NVD / CVE Program· CNA GitLab

Time-of-check Time-of-use (TOCTOU) Race Condition in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 17.0 before 19.0.5, 19.1 before 19.1.3, and 19.2 before 19.2.1 that under certain conditions could have allowed an authenticated user to merge code into a protected branch without the required approvals due to a race condition in approval rule processing.

MediumCVSS 5.3 · v3.1—No exploit Fix available

Noroxi analysis

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Published
Jul 29, 2026
Updated
Aug 20, 2026
EPSS
0.3% · 16th percentile
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Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.3
CNA · GitLab
6.5
1.2 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
gitlabgitlab

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • gitlab gitlab17.0.0 and later · before 19.0.5
  • gitlab gitlab19.1.0 and later · before 19.1.3
  • gitlab gitlab19.2.0

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

    • 17.0 and later · before 19.0.5affected · semver
    • 19.1 and later · before 19.1.3affected · semver
    • 19.2 and later · before 19.2.1affected · semver

Same product

gitlab: all records

Other 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.KEV
    100Now
  • CVE-2026-85706Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in GitLabKEV
    97Now
  • CVE-2023-7028Weak Password Recovery Mechanism for Forgotten Password in GitLabKEV
    97Now
  • CVE-2021-22175When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versionsKEV
    85Now
  • 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 beforeKEV
    71This 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 us
    65This 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 / packageFixed versionSource
GitLab GitLab19.0.5Vendor (CNA)
GitLab GitLab19.1.3Vendor (CNA)
GitLab GitLab19.2.1Vendor (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.

EPSS, last 120 days

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 researchers

Finders, 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.

  • CVE-2024-1122249 days apartTime-of-check Time-of-use (TOCTOU) Race Condition in GitLab
    25Monitor
  • CVE-2024-9183236 days apartTime-of-check Time-of-use (TOCTOU) Race Condition in GitLab
    25Monitor
  • CVE-2024-9512412 days apartTime-of-check Time-of-use (TOCTOU) Race Condition in GitLab
    23Monitor

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.

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
none
Integrity
high · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
High
Availability impact
None

Weakness class (CWE)

CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/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.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records