CVE-2026-55484: CWE-248: Uncaught Exception in guno1928 alos-http
Description
ALOS HTTP, a Go web framework and application server, has a vulnerability where a malformed request path starting with a question mark can cause an out-of-bounds panic. This occurs because the code accesses an array element without checking if the array is empty, leading to server process termination. The issue is fixed in version 0.0.0-20260617230736-314b6783e196.
CVSS v3.1
Score 7.5high
Affected software
guno1928
alos-http
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in ALOS HTTP (CVE-2026-55484) arises from an uncaught exception due to improper handling of request paths beginning with a question mark. Specifically, the function sanitizeRequestPath calls splitPathQuery and then accesses p[0] without verifying if the resulting path array is empty. An unauthenticated attacker can send a malformed request with a question-mark-only path, triggering an out-of-bounds panic that terminates the server process before recovery middleware can handle it. The flaw affects versions prior to 0.0.0-20260617230736-314b6783e196, where it has been fixed.
Potential Impact
An unauthenticated attacker can cause a denial of service by sending a specially crafted HTTP request that triggers an out-of-bounds panic, causing the server process to terminate. There is no impact on confidentiality or integrity, but availability is significantly affected.
Mitigation Recommendations
A fix is available in version 0.0.0-20260617230736-314b6783e196. Users should upgrade to this version or later to remediate the vulnerability. No other mitigation guidance is provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-16T22:28:27.061Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a91e40dacd9273b4942e83b
Added to database: 08/28/2026, 19:39:57 UTC
Last enriched: 09/08/2026, 03:22:05 UTC
Last updated: 10/13/2026, 18:48:21 UTC
Views: 46
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