CVE-2021-39880 - CVE House
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Status published Medium CVE-2021-39880

A Denial Of Service vulnerability in the apollo_upload_server Ruby gem...

Vulnerability Description

A Denial Of Service vulnerability in the apollo_upload_server Ruby gem in GitLab CE/EE all versions starting from 11.9 before 14.0.9, all versions starting from 14.1 before 14.1.4, and all versions starting from 14.2 before 14.2.2 allows an attacker to deny access to all users via specially crafted requests to the apollo_upload_server middleware.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Thanks 0xn3va for reporting this vulnerability through our HackerOne bug bounty program

References

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Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
>=14.2, <14.2.2, >=14.1, <14.1.4, >=11.9, <14.0.9

Timeline

Official Publish: October 5th, 2021
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.