CVE-2026-4789
CRITICALCVSS 9.8/10EPSS 0.70%
Last modified
CVE-2026-4789 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.
Description
Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kyverno | Kyverno | >= 1.16.0, <= 1.17.1 |
References
- https://kb.cert.org/vuls/id/655822Third Party Advisory
- https://portswigger.net/web-security/ssrfTechnical Description
- https://www.kb.cert.org/vuls/id/655822Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-4789?
Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.
How severe is CVE-2026-4789?
CVE-2026-4789 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.
How do I fix CVE-2026-4789?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- One Click Account Takeover in GranolaHow a notification link broke out of Electron and led to a one-click account takeover.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-47884Use of XsltView in a Spring MVC application can result in SS…9.8
- CVE-2026-47885The PartEventHttpMessageReader in Spring WebFlux does not en…7.5
- CVE-2026-47886Applications that evaluate user-supplied Spring Expression L…7.5
- CVE-2026-47887A Spring MVC application that uses UrlFileNameViewController…6.1
- CVE-2026-47888A Spring RSocket application is exposed to a memory leak via…7.5
- CVE-2026-47889A WebFlux application running on the Jetty 12 Core reactive …7.5
- CVE-2026-47890Spring MVC and WebFlux applications are vulnerable to stream…9.8
- CVE-2026-47891A Spring WebFlux application that relies on the Aalto XML pr…9.8
- CVE-2026-47892A WebFlux application using functional endpoints and deploye…9.8
- CVE-2026-47893A Spring WebFlux application that supports WebSocket connect…7.5
- CVE-2026-47894Spring Cloud Config Server native environment repository all…7.5
- CVE-2026-47895In strongSwan before 6.0.7, identity parsing/cloning is mish…7.5
Are you affected by CVE-2026-4789?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST