CVE-2021-3680

Name: CVE-2021-3680
Creator: NVD / NIST
Published: 2021-08-04T13:15:08.093+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.46%

Last modified Jun 17, 2026

CVE-2021-3680 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. showdoc is vulnerable to Missing Cryptographic Step. EPSS estimates a 0.46% chance of exploitation in the next 30 days.

Description

showdoc is vulnerable to Missing Cryptographic Step

Metrics

CVSS 3.1

4.9/10

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

EPSS Probability

0.46%

36.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Showdoc	Showdoc	<= 2.9.7

References

https://github.com/star7th/showdoc/commit/4b962c1740311e0d46775023b6acba39ad60e370Patch, Third Party Advisory
https://huntr.dev/bounties/76b49607-fba9-4100-9be7-cb459fe6cfe2Exploit, Third Party Advisory
https://github.com/star7th/showdoc/commit/4b962c1740311e0d46775023b6acba39ad60e370Patch, Third Party Advisory
https://huntr.dev/bounties/76b49607-fba9-4100-9be7-cb459fe6cfe2Exploit, Third Party Advisory

Timeline

Published: Aug 4, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3680?

showdoc is vulnerable to Missing Cryptographic Step

How severe is CVE-2021-3680?

CVE-2021-3680 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.46% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3680?

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-2021-3680?

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

Scan your code now

Source: NVD / NIST