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CVE-2022-41723 is an algorithmic-complexity vulnerability in the HTTP/2 HPACK decoder used by Go's net/http implementation and the Go Networking HTTP/2 package. Maliciously crafted HTTP/2 streams trigger quadratic-complexity header decoding, causing excessive CPU consumption. A small number of small requests can exhaust processing resources sufficiently to cause denial of service. The issue also affects applications that manually configure HTTP/2 using the Go Networking package.
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What an attacker gets, and what they’ve been doing with it.
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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.
63 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed in Ubuntu security advisory USN-8900-1 for golang-golang-x-net-dev on Ubuntu 22.04 LTS. The content does not describe the vulnerability's technical mechanism or individual impact.
Unknown. The content lists this vulnerability but does not describe its technical impact.
A vulnerability involving quadratic computational complexity during HPACK decoding in Go HTTP/2 implementations. Updated OpenShift Virtualization images include a fix.
A Go net/http and golang.org/x/net/http2 vulnerability involving quadratic computational complexity in HPACK decoding.
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.