Hertz contains path traversal via normalizePath function

published 2022-09-28 4 y ago modified 2026-06-17 4 mo ago also GHSA-c9qr-f6c8-rgxf , GO-2022-1027 , EUVD-2022-6778

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

Hertz v0.3.0 ws discovered to contain a path traversal vulnerability via the normalizePath function.

Patch / fix

fixed in 1 links 1

go github.com/cloudwego/hertz 0.3.1

github.com/cloudwego/hertz#229 pull request

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 17 mo ago (2025-05-21)

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/cloudwego/hertz/issues/228 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
go	github.com/cloudwego/hertz	<0.3.1	0.3.1

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /cloudwego/hertz/pull/229
web, patch, third-party-advisory
github.com /cloudwego/hertz/issues/228
web, exploit, issue-tracking, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2022-40082
advisory
github.com /cloudwego/hertz
package
pkg.go.dev /vuln/GO-2022-1027
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary