What is CVE-2022-0409?

CVE-2022-0409 is a high-severity vulnerability in Showdoc, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.8/10. Published 2022-02-19.

How severe is CVE-2022-0409?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2022-0409 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Arbitrary file upload in Showdoc

CVE-2022-0409

Unrestricted Upload of File with Dangerous Type in Packagist showdoc/showdoc prior to 2.10.2.

Vulnerability class: Unrestricted File Upload

Published 2022-02-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Showdoc
Star7th Star7th/showdoc — versions unspecified

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

Public proof-of-concept exploits

References

huntr.dev/bounties/c25bfad1-2611-4226-954f-009e50f966f7 (Exploit, Patch, Third Party Advisory)
github.com/star7th/showdoc/commit/7383d7a3c1b0807b6f397ba7df415a0ce7ccc436 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0409?: CVE-2022-0409 is a high-severity vulnerability in Showdoc, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 7.8/10. Published 2022-02-19.
How severe is CVE-2022-0409?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2022-0409 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.