What is the CVSS score of CVE-2021-38512?

CVE-2021-38512 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 1.8%.

Is there a public PoC exploit available for CVE-2021-38512?

Yes, a public proof-of-concept exploit is available for CVE-2021-38512. Prioritise patching immediately. EPSS: 1.8%.

Is there a patch available for CVE-2021-38512?

Yes, a patch is available for CVE-2021-38512. Update the affected software to the latest version immediately.

Actix Http CVE-2021-38512

HIGH

HTTP Request/Response Smuggling (CWE-444)

2021-08-10 cve@mitre.org

Request Smuggling Information Disclosure Actix Http Fedora

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVE Published

Aug 10, 2021 - 23:15 nvd

HIGH 7.5

DescriptionNVD

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.

AnalysisAI

An issue was discovered in the actix-http crate before 3.0.0-beta.9 for Rust. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as HTTP Request/Response Smuggling (CWE-444), which allows attackers to manipulate HTTP request interpretation between frontend and backend servers. 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. Affected products include: Actix Actix-Http, Fedoraproject Fedora. Version information: before 3.0.0.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Enforce strict HTTP parsing, normalize requests at proxy layer, use HTTP/2 end-to-end, reject ambiguous headers.