{"id":"CVE-2026-55484","title":"ALOS HTTP is a Linux-first Go web framework and application server built around a custom networking stack","summary":"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 wi…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-248","CWE-754"],"vendor":"guno1928","product":"github.com/guno1928/alos-http","affected":["github.com/guno1928/alos-http < 0.0.0-20260617230736-314b6783e196"],"patched":["github.com/guno1928/alos-http 0.0.0-20260617230736-314b6783e196"],"published":"2026-08-28","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:09:13.080","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55484","references":[{"url":"https://github.com/guno1928/alos-http/commit/314b6783e19698c85ea9d9b197ff52f7f6a3a374","label":"security-advisories@github.com"},{"url":"https://github.com/guno1928/alos-http/security/advisories/GHSA-hr6j-w4mw-g9mj","label":"security-advisories@github.com"},{"url":"https://github.com/guno1928/alos-http/security/advisories/GHSA-hr6j-w4mw-g9mj","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-hr6j-w4mw-g9mj"}],"tags":["nvd","ghsa","go"],"epss":0.00343,"epssPercentile":0.27972,"aliases":["GHSA-hr6j-w4mw-g9mj"],"ecosystem":"go","ingestedAt":"2026-08-28T19:24:18.708Z","slug":"CVE-2026-55484","body":"## Overview\n\nALOS 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-55484)\n\nAffected packages:\n\n- `github.com/guno1928/alos-http < 0.0.0-20260617230736-314b6783e196`\n\nPatched in:\n\n- `github.com/guno1928/alos-http 0.0.0-20260617230736-314b6783e196`\n\nSource: https://github.com/advisories/GHSA-hr6j-w4mw-g9mj","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}