High severity7.5NVD Advisory· Published Dec 2, 2021· Updated Jun 17, 2026
CVE-2021-43795
CVE-2021-43795
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
com.linecorp.armeria:armeriaMaven | >= 1.12.0, < 1.13.4 | 1.13.4 |
Affected products
3Patches
Vulnerability mechanics
References
5- github.com/line/armeria/commit/e2697a575e9df6692b423e02d731f293c1313284nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-8fp4-rp6c-5gcvghsaADVISORY
- github.com/line/armeria/pull/3855nvdThird Party AdvisoryWEB
- github.com/line/armeria/security/advisories/GHSA-8fp4-rp6c-5gcvnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2021-43795ghsaADVISORY
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