CVE-2025-71261 Harvester's SUSE Virtualization Registration Client Vulnerable to MITM and DOS
An attacker can bypass TLS security controls and cause denial of service in SUSE Harvester by interfering with the registration client's handshake.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-71261?
CVE-2025-71261 is a high-severity vulnerability in SUSE Harvester, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An attacker with network-level access between the SUSE Virtualization and Rancher Manager in SUSE Harvester before 1.8.0 could interfere with the TLS handshake and abuse it to bypass TLS as a security control.
Weakness: CWE-295
Which versions are affected by CVE-2025-71261?
3 open source packages ship an affected version, including github.com/harvester/harvester.
| Package | Affected | Fixed in |
|---|---|---|
github.com/harvester/harvester Go | All versions | 1.8.0 |
github.com/harvester/harvester Go | All versions | 1.8.0 |
github.com/harvester/harvester Go | All versions | 1.8.0 |
How do I fix CVE-2025-71261?
Upgrade github.com/harvester/harvester to 1.8.0 or later.
Is CVE-2025-71261 being exploited?
There is no known exploitation of CVE-2025-71261 in the wild and no public exploit code.
Sources
Also known as GHSA-pgh9-mpwc-8jjf, GO-2026-5538, MINI-75xf-pxmc-575r, MINI-95p2-4536-q6jp.