cve.bz

CVE-2022-21221

7.5 highEPSS 2.5%

High (7.5) in fasthttp project fasthttp. EPSS 2.5% chance of exploitation in the next 30 days. Fixed in github.com/valyala/fasthttp 1.34.0.

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.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
2.5% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
CWE
CWE-22
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-fx95-883v-4q4hGogithub.com/valyala/fasthttp<1.34.01.34.0
GO-2022-0355Gogithub.com/valyala/fasthttp<1.34.01.34.0

References

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