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Fencer Vulns
high 7.6

CVE-2020-5280 json

Local file inclusion vulnerability in http4s

published 2020-03-25 6 y ago modified 2026-07-08 4 mo ago also GHSA-66q9-f7ff-mmx6 , EUVD-2020-0333

cvss
7.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
7.0%
EPSS 7.0% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

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.

Patch / fix

  • maven org.http4s:http4s-server_2.12 0.18.26, 0.20.20, 0.21.2
  • typelevel http4s 0.18.26, 0.20.20, 0.21.2

Exploit prediction

6.98% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/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
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub 3.1 7.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.http4s:http4s-server_2.12
<0.18.26
>=0.19.0, <0.20.20
>=0.21.0, <0.21.2
0.18.26
0.20.20
0.21.2

Affected products

  • http4s http4s

Classification

Weakness
  • CWE-23 Relative Path Traversal
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

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.