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CVE-2022-41723 is a denial-of-service vulnerability in Go's HTTP/2 HPACK decoder, affecting the HTTP/2 implementation bundled with net/http and golang.org/x/net/http2 when HTTP/2 is manually configured. Maliciously crafted HTTP/2 streams trigger quadratic-complexity behavior during HPACK decoding, causing disproportionate CPU consumption.
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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 public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
59 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Go net/http and golang.org/x/net/http2 vulnerability involving quadratic computational complexity in HPACK decoding.
A Go net/http and x/net/http2 HPACK-decoding complexity vulnerability that could lead to excessive resource consumption.
A prior vulnerability for which the etcd fix was incomplete in Red Hat OpenStack Platform.
A previously addressed vulnerability for which the advisory identifies an incomplete etcd fix.
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.