HOMEVULNERABILITIESCVE-2020-5280
HIGH

CVE-2020-5280

CWE-23Published: March 25, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-5280 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

typelevel1 product(s)
http4s
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ec
PATCHhttps://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efca
PATCHhttps://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17b
PATCHhttps://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ec
PATCHhttps://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efca
PATCHhttps://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17b
ADVISORYhttps://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6
ADVISORYhttps://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6

All References (8)

→
https://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ecPatch
→
https://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efcaPatch
→
https://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17bPatch
→
https://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6Third Party Advisory
→
https://github.com/http4s/http4s/commit/250afddbb2e65b70ca9ddaec9d1eb3aaa56de7ecPatch
→
https://github.com/http4s/http4s/commit/752b3f63a05a31d2de4f8706877aa08d6b89efcaPatch
→
https://github.com/http4s/http4s/commit/b87f31b2292dabe667bec3b04ce66176c8a3e17bPatch
→
https://github.com/http4s/http4s/security/advisories/GHSA-66q9-f7ff-mmx6Third Party Advisory

Quick Facts

CVE IDCVE-2020-5280
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-23
CISA KEVNo
Affected1 vendor(s)
PublishedMar 25, 2020

Related CVEs (CWE-23)

CVE-2023-3941
10.0
CVE-2026-8326
10.0
CVE-2026-52813
KEV10.0
CVE-2026-33494
10.0
CVE-2012-6069
10.0
CVE-2023-6825
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-5280 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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