CVE-2026-54287
MEDIUM EPSS 8.4%
Published Jun 22, 20261w ago · Modified Jun 22, 20261w ago
5.3 CVSS 3.1
Published Jun 22, 2026 1w ago
Last Modified Jun 22, 2026 1w ago
Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.25, on AWS Lambda, the ALB single-header response and the VPC Lattice v2 response join multiple Set-Cookie headers into one comma-separated value. Because commas also appear inside cookie attributes (for example Expires dates), clients cannot split the value back into individual cookies and silently drop or misparse them. This vulnerability is fixed in 4.12.25.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
8.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-116
References 1
- github.com https://github.com/honojs/hono/security/advisories/GHSA-j6c9-x7qj-28xf
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.