The activity, which has primarily singled out IT providers and government sectors, has been attributed to a threat cluster tracked by Check Point Research
Dubbed ‘Januscape’ and tracked as CVE-2026-53359, the flaw sits in the shadow MMU code that KVM shares across both Intel and AMD. The public proof-of-concept panics the host; the researcher claims that a separate, unreleased exploit
The vulnerability in question is CVE-2026-20896 (CVSS score: 9.8), a vulnerability that stems from the DevOps platform trusting the “X-WEBAUTH-USER” header from any source IP address, effectively allowing an unauthenticated internet client to get elevated
Moving from isolated, technical data to a continuous risk lifecycle can help organizations align security controls with actual business consequences.
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The threat actor uses modular RATs and information stealers in financially motivated and cyber espionage campaigns.
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The PolinRider campaign has compromised more than 100 legitimate open source packages and repositories to deliver a backdoor and information stealer to developers.
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Home devices became a routing cover. Clean code pulled dirt from a dependency. Identity shortcuts aged badly. AI systems trusted the wrong instructions. Same soft spot throughout: trust