What it is
CVE-2021-22175 is an unauthenticated vulnerability affecting GitLab GitLab. When requests to the internal network for webhooks are enabled, a server-side request forgery vulnerability in GitLab affecting all versions...
Vulnerability report
Exploited in the wild
Confirmed confidence
In CISA KEV
CVE-2021-22175
GitLab Server-Side Request Forgery
GitLab / GitLab · >=10.5, <13.6.7
- Severity
- CVSS 6.8 · Medium
- Confidence
- Confirmed
- Exploit status
- Exploited in the wild
- EPSS
- 53.4%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is confirmed.
Who is affected?
GitLab / GitLab >=10.5, <13.6.7.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
GitLab Server-Side Request Forgery
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
Vendor
Product
Affected
Status
GitLab
GitLab
>=10.5, <13.6.7
Affected
GitLab
GitLab
>=13.7, <13.7.7
Affected
GitLab
GitLab
>=13.8, <13.8.4
Affected
- Published
- 11 Jun 2021
- Exploitation Reported
- 01 Jun 2026
- Attack vector
- Remote
- Complexity
- High
- Privileges
- None
- User interaction
- None
Tags
nuclei_scanner
cisa
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2021-22175
- gitlab.com/gitlab-org/gitlab/-/issues/294178 gitlab.com · CVE Record https://gitlab.com/gitlab-org/gitlab/-/issues/294178
- hackerone.com/reports/1059596 hackerone.com · CVE Record https://hackerone.com/reports/1059596
- gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-... gitlab.com · CVE Record https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22175....
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
CVE
Independent exploitation attestation added to the KEV Intelligence record.
Proof of concept available
Nuclei Templates
Public scanner or PoC coverage increases practical exploitability.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| CVE First | 2026-06-01 10:59 UTC |
| CISA | 2026-06-02 14:03 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
Nuclei template detected 01 Jun 2026.
View Nuclei template (opens in new tab)Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-22175.yaml | 01 Jun 2026 |
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
6.8
Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
EPSS
53.4%
Weaknesses
All CVSS Scores
CVSS v3.1
6.8
Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v2.0
6.8
Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
GitLab CI Lint API - Server-Side Request Forgery
nuclei · Created Unknown
Timeline
From disclosure to observed exploitation
-
Public PoC available
Public proof-of-concept code published
-
Added to CISA KEV
Listed in the CISA Known Exploited Vulnerabilities catalog
-
Nuclei template available
Scanner coverage available
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE published
Vulnerability disclosed publicly
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2021-22175
Free JSON includes basic KEV fields{
"cve_id": "CVE-2021-22175",
"confidence": "Confirmed",
"cvss_score": 6.8,
"cvss_estimated": false,
"epss_score": 0.53372,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
Get alerts on high-impact exploitation
Receive curator-selected alerts when exploitation activity warrants attention. Each alert includes the evidence and context needed to decide what requires attention now.