CVE-2021-43795
HIGHArmeria < 1.13.4 - Path Traversal via URL-Encoded Forward Slash Bypass
Title source: llmDescription
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.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcv
Third Party Advisory x_refsource_misc
https://github.com/line/armeria/pull/3855
Patch, Third Party Advisory x_refsource_misc
https://github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284
Scores
CVSS v3
7.5
EPSS
0.0164
EPSS Percentile
73.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-22
Status
published
Products (2)
com.linecorp.armeria/armeria
1.12.0 - 1.13.4Maven
linecorp/armeria
< 1.13.4
Published
Dec 02, 2021
Tracked Since
Feb 18, 2026