CVE-2020-8559

unknown

Published 2024-04-24 · Modified 2026-02-04

💬 Discuss on Community ✚ Propose mitigation

CVSS v3

—

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

—

Description

The Kubernetes kube-apiserver in versions v1.6-v1.15, and versions prior to v1.16.13, v1.17.9 and v1.18.6 are vulnerable to an unvalidated redirect on proxied upgrade requests that could allow an attacker to escalate privileges from a node compromise to a full cluster compromise.

Predictions

Exploit likelihood

30%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

SUSE Affected 1 release

Version	Status	Fixed in
—	Affected	—

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`1.18.5-1`
sid	Fixed	`1.18.5-1`
forky	Fixed	`1.18.5-1`
bullseye	Fixed	`1.18.5-1`
bookworm	Fixed	`1.18.5-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	k8s.io/apimachinery	`<0.16.13`	`0.16.13`
Go	k8s.io/apimachinery	`>=0.17.0,<0.17.9`	`0.17.9`
Go	k8s.io/apimachinery	`>=0.18.0,<0.18.7`	`0.18.7`
Go	k8s.io/kubernetes	`<1.16.13`	`1.16.13`
Go	k8s.io/kubernetes	`>=1.17.0,<1.17.9`	`1.17.9`
Go	k8s.io/kubernetes	`>=1.18.0,<1.18.7`	`1.18.7`
Go	k8s.io/apimachinery	`>=0.18.0,<0.18.7-rc.0`	`0.16.13`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.