What is the CVSS score of CVE-2022-21221?

CVE-2022-21221 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: 2.5%.

Is there a public PoC exploit available for CVE-2022-21221?

Yes, a public proof-of-concept exploit is available for CVE-2022-21221. Prioritise patching immediately. EPSS: 2.5%.

Is there a patch available for CVE-2022-21221?

Yes, a patch is available for CVE-2022-21221. Update the affected software to the latest version immediately.

Fasthttp CVE-2022-21221

HIGH

Path Traversal (CWE-22)

2022-03-17 report@snyk.io

Microsoft Path Traversal Fasthttp

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

Mar 17, 2022 - 12:15 nvd

HIGH 7.5

DescriptionNVD

The package github.com/valyala/fasthttp before 1.34.0 are vulnerable to Directory Traversal via the ServeFile function, due to improper sanitization. It is possible to be exploited by using a backslash %5c character in the path. Note: This security issue impacts Windows users only.

AnalysisAI

The package github.com/valyala/fasthttp before 1.34.0 are vulnerable to Directory Traversal via the ServeFile function, due to improper sanitization. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. The package github.com/valyala/fasthttp before 1.34.0 are vulnerable to Directory Traversal via the ServeFile function, due to improper sanitization. It is possible to be exploited by using a backslash %5c character in the path. Note: This security issue impacts Windows users only. Affected products include: Fasthttp Project Fasthttp. Version information: before 1.34.0.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.