Known exploited vulnerability
CVE-2021-22175
The short answer
CVE-2021-22175 affects GitLab GitLab and is rated critical (CVSS 9.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-02-18: attackers are using it, so patch it first.
What it is
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
Weakness: CWE-918.
Severity
9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Feb 18, 2026
Federal due date Mar 11, 2026
EPSS, next 30 days
53%
Higher than 99% of scored CVEs
How it can be exploited
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
GitLab. NVD's record lists the exact affected versions.
References
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json Vendor Advisory
- gitlab.com/gitlab-org/gitlab/-/issues/294178 ExploitIssue TrackingVendor Advisory
- hackerone.com/reports/1059596 Permissions RequiredThird Party Advisory
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175.json Vendor Advisory
- gitlab.com/gitlab-org/gitlab/-/issues/294178 ExploitIssue TrackingVendor Advisory
- hackerone.com/reports/1059596 Permissions RequiredThird Party Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22175 US Government Resource
Questions
Is CVE-2021-22175 being exploited?
Yes. CISA added CVE-2021-22175 to its Known Exploited Vulnerabilities catalog on 2026-02-18, with a federal remediation due date of 2026-03-11.
How do I fix CVE-2021-22175?
CISA's required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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