CVE-2021-38512
HIGHCVSS 7.5/10EPSS 1.81%
Last modified
CVE-2021-38512 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in the actix-http crate before 3.0.0-beta.9 for Rust. HTTP/1 request smuggling (aka HRS) can occur, potentially leading to credential disclosure.. EPSS estimates a 1.81% chance of exploitation in the next 30 days.
Description
An issue was discovered in the actix-http crate before 3.0.0-beta.9 for Rust. HTTP/1 request smuggling (aka HRS) can occur, potentially leading to credential disclosure.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Actix | Actix-Http | < 3.0.0 |
| Actix | Actix-Http | 3.0.0 |
| Fedoraproject | Fedora | 34 |
References
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/actix-http/RUSTSEC-2021-0081.mdExploit, Third Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0081.htmlThird Party Advisory
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/actix-http/RUSTSEC-2021-0081.mdExploit, Third Party Advisory
- https://rustsec.org/advisories/RUSTSEC-2021-0081.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-38512?
An issue was discovered in the actix-http crate before 3.0.0-beta.9 for Rust. HTTP/1 request smuggling (aka HRS) can occur, potentially leading to credential disclosure.
How severe is CVE-2021-38512?
CVE-2021-38512 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.81% probability of exploitation in the next 30 days.
How do I fix CVE-2021-38512?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
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Are you affected by CVE-2021-38512?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST