CVE-2022-21221

low-risk
Published 2022-03-17

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.

Do I need to act?

-
0.57% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Fasthttp

Affected Vendors

Fasthttp Project

References (10)

Patch https://github.com/valyala/fasthttp/commit/15262ecf3c602364639d465daba1e7f3604d0...
Patch https://github.com/valyala/fasthttp/commit/6b5bc7bb304975147b4af68df54ac214ed255...
Exploit https://github.com/valyala/fasthttp/issues/1226
Release Notes https://github.com/valyala/fasthttp/releases/tag/v1.34.0
Exploit https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMVALYALAFASTHTTP-2407866
Patch https://github.com/valyala/fasthttp/commit/15262ecf3c602364639d465daba1e7f3604d0...
Patch https://github.com/valyala/fasthttp/commit/6b5bc7bb304975147b4af68df54ac214ed255...
Exploit https://github.com/valyala/fasthttp/issues/1226
Release Notes https://github.com/valyala/fasthttp/releases/tag/v1.34.0
Exploit https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMVALYALAFASTHTTP-2407866
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal