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CVE-2021-43795 Details

Description

Armeria is an open source microservice framework. In affected versions an attacker can access an Armeria server's local file system beyond its restricted directory by sending an HTTP request whose path contains `%2F` (encoded `/`), such as `/files/..%2Fsecrets.txt`, bypassing Armeria's path validation logic. Armeria 1.13.4 or above contains the hardened path validation logic that handles `%2F` properly. This vulnerability can be worked around by inserting a decorator that performs an additional validation on the request path.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284	CVE	PatchThird Party Advisory
https://github.com/line/armeria/pull/3855	CVE	Third Party Advisory
https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv	CVE	Third Party Advisory
https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284	[email protected]	PatchThird Party Advisory
https://github.com/line/armeria/pull/3855	[email protected]	Third Party Advisory
https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv	[email protected]	Third Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	[email protected]

Affected Products

Product	Versions
linecorp armeria	< 1.13.4
CPE cpe:2.3:a:linecorp:armeria:::::::: Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 6, 2021	Initial Analysis	[email protected]