CVE-2026-35213
@hapi/content: Regular Expression Denial of Service (ReDoS) in HTTP header parsing
Description
All versions of `@hapi/content` through 6.0.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via crafted HTTP header values. Three regular expressions used to parse `Content-Type` and `Content-Disposition` headers contain patterns susceptible to catastrophic backtracking. This has been fixed in v6.0.1. ### Impact Denial of Service. An unauthenticated remote attacker can cause a Node.js process to become unresponsive by sending a single HTTP request with a maliciously crafted header value. ### Patches Fixed by tightening all three regular expressions to eliminate backtracking. ### Workarounds There are no known workarounds. Upgrade to the patched version.
How to fix CVE-2026-35213
To remediate CVE-2026-35213, upgrade the affected package to a fixed version below.
- —upgrade to 6.0.1 or later
Is CVE-2026-35213 being exploited?
Low — EPSS is 0.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 6.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |