PatchTheCVECVE-2020-35901: An issue was discovered in the actix-http crate before 2.0.0-alpha.1 for Rust
CVE-2020-35901 is a high-severity flaw (CVSS 7.5) affecting actix-http. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
An issue was discovered in the actix-http crate before 2.0.0-alpha.1 for Rust. There is a use-after-free in BodyStream.
Why this priority
- High severity
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.4% (top 27%) |
| CISA exploited list | No |
| Weakness | CWE-416 |
| Published | 2020-12-31 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-35901?
actix-http: upgrade to newer than 1.0.1. Exact commands for each OS are on this page.
Is CVE-2020-35901 being exploited?
CVE-2020-35901 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-35901 affect?
CVE-2020-35901 affects actix-http. Severity is high (CVSS 7.5). An issue was discovered in the actix-http crate before 2.0.0-alpha.1 for Rust. There is a use-after-free in BodyStream.
How urgent is CVE-2020-35901?
Priority 54/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2021-38512 HIGH 7.5 UPGRADE MITIGATE An issue was discovered in the actix-http crate before 3.0.0-beta.9 for Rust