CVE-2021-4017

Name: CVE-2021-4017
Creator: NVD / NIST
Published: 2021-12-01T11:15:08.273+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2021-4017 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. showdoc is vulnerable to Cross-Site Request Forgery (CSRF). EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

showdoc is vulnerable to Cross-Site Request Forgery (CSRF)

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.60%

44.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Showdoc	Showdoc	< 2.9.13

References

https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871Patch, Third Party Advisory
https://huntr.dev/bounties/1d8439e8-b3f7-40f8-8b30-f9cb05ff2bcdExploit, Patch, Third Party Advisory
https://github.com/star7th/showdoc/commit/654e871a3923e79076818a9a03533fe88222c871Patch, Third Party Advisory
https://huntr.dev/bounties/1d8439e8-b3f7-40f8-8b30-f9cb05ff2bcdExploit, Patch, Third Party Advisory

Timeline

Published: Dec 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4017?

showdoc is vulnerable to Cross-Site Request Forgery (CSRF)

How severe is CVE-2021-4017?

CVE-2021-4017 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4017?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-4017?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST