CVE-2026-39429GO-2026-5088GHSA-3J3Q-WP9X-585P
kcp's cache server is accessible without authentication or authorization checks
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 0.30.3, 0.29.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
kcp is a Kubernetes-like control plane for form-factors and use-cases beyond Kubernetes and container workloads. Prior to 0.30.3 and 0.29.3, the cache server is directly exposed by the root shard and has no authentication or authorization in place. This allows anyone who can access the root shard to read and write to the cache server. This vulnerability is fixed in 0.30.3 and 0.29.3.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- kcp-dev kcp
From 0.30.0 · fixed in 0.30.3; fixed in 0.29.3
- github.com/kcp-dev/kcpGo
fixed in 0.29.3; From 0.30.0 · fixed in 0.30.3
- github.com/kcp-dev/kcpGo
From 0.30.0 · fixed in 0.30.3
- github.com/kcp-dev/kcpGo
fixed in 0.29.3