CVE-2026-84196
Kyverno before 1.18.0 Server-Side Request Forgery via apiCall
- State
- Published
- Severity
- 8.3 High
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Reserved
- Sep 1, 2026
Description
Kyverno before 1.18.0 contains a server-side request forgery vulnerability in apiCall.service.url that allows authenticated users to send arbitrary HTTP requests by injecting user-controlled input through variable substitution. Attackers can target internal services, cloud metadata endpoints, and loopback addresses, with response data reflected in admission error messages enabling non-blind data exfiltration.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.3 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N | VulnCheck |
| 3.1 | 7.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
kyvernokyverno |
|
References
- GitHub Security Advisory (GHSA-qr4g-8hrp-c4rw)vendor-advisory
- VulnCheck Advisory: Kyverno before 1.18.0 Server-Side Request Forgery via apiCallthird-party-advisory
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