CVE-2021-22175 is a vulnerability in GitLab
Published on June 11, 2021
When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is disabled
Known Exploited Vulnerability
This GitLab Server-Side Request Forgery (SSRF) Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. GitLab contains a server-side request forgery (SSRF) vulnerability when requests to the internal network for webhooks are enabled.
The following remediation steps are recommended / required by March 11, 2026: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vulnerability Analysis
CVE-2021-22175 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a SSRF Vulnerability?
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. By providing URLs to unexpected hosts or ports, attackers can make it appear that the server is sending the request, possibly bypassing access controls such as firewalls that prevent the attackers from accessing the URLs directly. The server can be used as a proxy to conduct port scanning of hosts in internal networks, use other URLs such as that can access documents on the system (using file://), or use other protocols such as gopher:// or tftp://, which may provide greater control over the contents of requests.
CVE-2021-22175 has been classified to as a SSRF vulnerability or weakness.
Products Associated with CVE-2021-22175
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Affected Versions
GitLab:- Version >=10.5, <13.6.7 is affected.
- Version >=13.7, <13.7.7 is affected.
- Version >=13.8, <13.8.4 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.