What is CVE-2022-0940?

CVE-2022-0940 is a medium-severity vulnerability in Showdoc, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-03-14.

How severe is CVE-2022-0940?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Showdoc

CVE-2022-0940

Stored XSS due to Unrestricted File Upload in GitHub repository star7th/showdoc prior to v2.10.4.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-03-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 43.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Showdoc
Star7th Star7th/showdoc — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

huntr.dev/bounties/856bd2e2-db4f-4b7d-9927-222261ae3782 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/star7th/showdoc/commit/78522520892d4e29cc94148c6ec84a204a607b73 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-0940?: CVE-2022-0940 is a medium-severity vulnerability in Showdoc, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-03-14.
How severe is CVE-2022-0940?: Medium severity. CVSS v3 base score is 5.4 out of 10.