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Vulnerability record · CVE-2020-5280 · published 25 March 2020

CVE-2020-5280: Typelevel http4s relative path traversal vulnerability

Typelevel · Http4s

http4s before versions 0.18.26, 0.20.20, and 0.21.2 has a local file inclusion vulnerability. This vulnerability applies to all users of org.http4s.server.staticcontent.FileService, org.http4s.server.staticcontent.ResourceService and org.http4s.server.staticcontent.WebjarService. URI normalization is applied incorrectly. Requests whose path info contain ../ or // can expose resources outside of the configured location. This issue is patched in versions 0.18.26, 0.20.20, and 0.21.2. Note that 0.19.0 is a deprecated release and has never been supported.

7.5 CVSS 3.1 High EPSS 7.0% · top 6.1% CWE-23 · Relative path traversalCWE-22 · Path traversal
7.5CVSS 3.1 base score, v2 5.0
7.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

http4s before versions 0.18.26, 0.20.20, and 0.21.2 has a local file inclusion vulnerability. This vulnerability applies to all users of org.http4s.server.staticcontent.FileService, org.http4s.server.staticcontent.ResourceService and org.http4s.server.staticcontent.WebjarService. URI normalization is applied incorrectly. Requests whose path info contain ../ or // can expose resources outside of the configured location. This issue is patched in versions 0.18.26, 0.20.20, and 0.21.2. Note that 0.19.0 is a deprecated release and has never been supported.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ec Patch
https://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efca Patch
https://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17b Patch
https://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6 Third Party Advisory
https://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ec Patch
https://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efca Patch
https://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17b Patch
https://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-5280), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.