What is the CVSS score of CVE-2020-10109?

CVE-2020-10109 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.3%.

Is there a public PoC exploit available for CVE-2020-10109?

Yes, a public proof-of-concept exploit is available for CVE-2020-10109. Prioritise patching immediately. EPSS: 3.3%.

Is there a patch available for CVE-2020-10109?

Yes, a patch is available for CVE-2020-10109. Update the affected software to the latest version immediately.

Twisted CVE-2020-10109

CRITICAL

HTTP Request/Response Smuggling (CWE-444)

2020-03-12 cve@mitre.org

Request Smuggling Information Disclosure Twisted Fedora Debian Linux Ubuntu Linux

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

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:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Mar 12, 2020 - 13:15 nvd

CRITICAL 9.8

Blast Radius

ecosystem impact

† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth

30 pypi packages depend on twisted (27 direct, 3 indirect)

Ecosystem-wide dependent count for version 20.3.0.

DescriptionNVD

In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with a content-length and a chunked encoding header, the content-length took precedence and the remainder of the request body was interpreted as a pipelined request.

AnalysisAI

In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. Rated critical severity (CVSS 9.8), 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. In Twisted Web through 19.10.0, there was an HTTP request splitting vulnerability. When presented with a content-length and a chunked encoding header, the content-length took precedence and the remainder of the request body was interpreted as a pipelined request. Affected products include: Twisted, Fedoraproject Fedora, Debian Debian Linux, Canonical Ubuntu Linux. Version information: through 19.10.0.

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.