CVE-2026-121441
Last modified
CVE-2026-121441 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. Wasmtime before 36.0.19, 37.0.0 before 48.0.7, and 49.0.0 before 49.0.4 contains a request smuggling vulnerability in wasi-http that allows guests to set multiple conflicting content-length headers. Malicious guests can make the host send HTTP requests with conflicting content-length values to smuggle requests through servers or intermediaries that do not reject them..
Description
Wasmtime before 36.0.19, 37.0.0 before 48.0.7, and 49.0.0 before 49.0.4 contains a request smuggling vulnerability in wasi-http that allows guests to set multiple conflicting content-length headers. Malicious guests can make the host send HTTP requests with conflicting content-length values to smuggle requests through servers or intermediaries that do not reject them.
Metrics
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-121441?
How severe is CVE-2026-121441?
How do I fix CVE-2026-121441?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-121436Froxlor from 2.3.8 before 2.3.15 contains an information dis…7.2
- CVE-2026-121437Mistune from 3.3.0 before 3.3.4 contains a denial of service…7.5
- CVE-2026-121438Mistune before 3.3.3 contains a denial of service vulnerabil…5.3
- CVE-2026-121439Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 conta…5.3
- CVE-2026-12144The Wholesale for WooCommerce plugin for WordPress is vulner…8.8
- CVE-2026-121440Wasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 fails…3.7
- CVE-2026-121442Frappe HRMS before 15.61.0 contains a permission bypass vuln…4.3
- CVE-2026-121443svg-sanitizer from 1.1.0 before 1.1.1 contains a denial of s…5.3
- CVE-2026-121444svg-sanitizer from 0.11.0 before 1.1.0 contains an algorithm…7.5
- CVE-2026-121445darylldoyle svg-sanitizer from 1.0.0 before 1.1.0 contains a…5.9
- CVE-2026-121446svg-sanitizer from 0.5.0 before 1.1.0 contains an incomplete…4.3
- CVE-2026-121447svg-sanitizer before 1.1.0 contains a cross-site scripting v…6.1
Are you affected by CVE-2026-121441?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST