GO-2026-4918

vendorUSosv

Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net

view advisory published 2026-05-07Licence: per source

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-33814US	high7.5	0.84% (58th)	—	2026-05-07
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

references

External citations — patches, advisories, analysis.

https://go.dev/cl/761581FIX
https://go.dev/cl/761640FIX
https://go.dev/issue/78476REPORT
https://groups.google.com/g/golang-announce/c/qcCIEXso47MWEB

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