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CVE-2026-44579 is a denial-of-service vulnerability in Next.js affecting applications that use Partial Prerendering through the Cache Components feature. In vulnerable versions prior to 15.5.16 and 16.2.5, crafted POST requests to a server action can trigger a request-body handling deadlock associated with the resume mechanism for Partial Prerendered requests. The flaw can leave connections open for an extended period instead of completing or failing cleanly, causing accumulation of open sockets and file descriptor consumption. The issue is associated with improper acceptance of a resume-related header from untrusted external requests, enabling attackers to induce connection exhaustion against affected deployments.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.