CVE-2026-55484

High

Description

ALOS HTTP is a Linux-first Go web framework and application server built around a custom networking stack. Prior to 0.0.0-20260617230736-314b6783e196, core/utils.go::sanitizeRequestPath calls splitPathQuery on a request path beginning with a question mark and then performs the unchecked p[0] access without checking whether the resulting path is empty. An unauthenticated client can send a malformed request such as a question-mark-only path through h1_plain.go::ParseH1RequestHead, hpack.go::decodeSimpleGetPathHTTPSRequest, hpack.go::observeHeader, or h3_conn.go::handleRequestStream, causing an out-of-bounds panic before core.Recovery() middleware runs and terminating the server process. This issue is fixed in pseudo-version 0.0.0-20260617230736-314b6783e196.

SeverityHigh
CVSS7.5
Exploit probability—
ProductGithub.com/guno1928/alos-http
PublishedAug 28, 2026
First seenAug 28, 2026

How to fix

Update
  • github.com/guno1928/alos-http0.0.0-20260617230736-314b6783e196 or later

Affected products

ProductAffected versionsFixed in
github.com/guno1928/alos-httpGov < 0.0.0-20260617230736-314b6783e1960.0.0-20260617230736-314b6783e196

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