CVE-2022-0956

Stored XSS via File Upload in star7th/showdoc

7.1 HighFix available

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to v.2.10.4.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: Low

Exploit likelihood

0.74%Down 0.1 points since Mar 16, 2022

What each source reports

CVE List Score used 7.1

Stored XSS via File Upload in star7th/showdoc

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to v.2.10.4.

Record: CVE-2022-0956
CVSS 3.0: 7.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2022-1568 7.1

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to v.2.10.4.

Record: EUVD-2022-1568
CVSS 3.0: 7.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-wg8p-w946-c482 5.4

Cross-site Scripting in ShowDoc

ShowDoc prior to 2.10.4 is vulnerable to stored cross-site scripting via file upload.

Record: GHSA-wg8p-w946-c482
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 5.4

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to v.2.10.4.

Record: CVE-2022-0956
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 3.0: 7.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
CVSS 2.0: 3.5 LowAV:N/AC:M/Au:S/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV 7.1

Stored XSS via File Upload in star7th/showdoc

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to v.2.10.4.

Record: CVE-2022-0956
CVSS 3.0: 7.1 HighCVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-wg8p-w946-c482 5.4

Cross-site Scripting in ShowDoc

ShowDoc prior to 2.10.4 is vulnerable to stored cross-site scripting via file upload.

Record: GHSA-wg8p-w946-c482
CVSS 3.1: 5.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`showdoc/showdoc` Packagist	before 2.10.4	2.10.4
`showdoc/showdoc` Packagist	before 2.10.4, plus listed versions v1.0.0v1.0.1v1.0.2v1.0.3v1.0.4 Show 45 moreShow less v1.0.5v1.1.0v1.1.1v1.1.3v1.1.4v1.1.5v1.2.0v1.2.1v1.2.2v1.2.3v1.2.4v1.2.5v1.2.6v1.3.0v1.3.1v1.3.3v1.3.4v1.3.5v1.3.6v1.3.7v1.3.8v1.4.0v1.4.1v1.4.2v1.4.3v1.4.4v1.4.5v1.4.6v1.4.7v1.5.0v1.5.1v1.5.2v1.5.3v1.6.0v1.6.1v1.6.2v1.7.0v1.7.1v1.7.2v1.8.0v1.8.1v1.8.2v1.8.3v1.8.4v1.8.5	2.10.4

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-0956 is a high vulnerability (CVSS 7.1) in Showdoc, published March 15, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.74%, the 54th percentile. Fixed in showdoc/showdoc 2.10.4.

References

This page doesn't list everything

Left out here: 87 versions. The JSON record has them.