CVE-2021-39880

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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.39%

Vendor Advisory gitlab.com

Affected: GitLab GitLab

References

Link	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/330561	broken link
https://hackerone.com/reports/1181284	third party advisory permissions required
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39880.json	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-39880?: CVE-2021-39880 has been scored as a medium severity vulnerability.
How to fix CVE-2021-39880?: To fix CVE-2021-39880, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-39880 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-39880 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39880?: CVE-2021-39880 affects GitLab GitLab.

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