CVE-2021-3680

Missing Cryptographic Step in star7th/showdoc

5.3 Medium

showdoc is vulnerable to Missing Cryptographic Step

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: High
Privileges needed: High
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.46%Down 0.2 points since Aug 5, 2021

What each source reports

CVE List Score used 5.3

Missing Cryptographic Step in star7th/showdoc

showdoc is vulnerable to Missing Cryptographic Step

Record: CVE-2021-3680
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
Weakness: CWE-325
Updated: 2026-11-02

EUVDEUVD-2021-2019 5.3

showdoc is vulnerable to Missing Cryptographic Step

Record: EUVD-2021-2019
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8vh3-29mr-m9xg 4.9

Inadequate Encryption Strength in showdoc

showdoc makes use of a hardcoded salt in its user password hash function

Record: GHSA-8vh3-29mr-m9xg
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-326, CWE-347
Updated: 2026-11-02

NVD 4.9

showdoc is vulnerable to Missing Cryptographic Step

Record: CVE-2021-3680
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
CVSS 2.0: 4.0 MediumAV:N/AC:L/Au:S/C:N/I:P/A:N
Weakness: CWE-325, CWE-347
Updated: 2026-11-02

OSV 4.9

showdoc is vulnerable to Missing Cryptographic Step

Record: CVE-2021-3680
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVGHSA-8vh3-29mr-m9xg 4.9

Inadequate Encryption Strength in showdoc

showdoc makes use of a hardcoded salt in its user password hash function

Record: GHSA-8vh3-29mr-m9xg
CVSS 3.1: 4.9 MediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-326, CWE-347
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`showdoc/showdoc` Packagist	through 2.9.8	None known
`showdoc/showdoc` Packagist	through 2.9.8, 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	None known

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-2021-3680 is a medium vulnerability (CVSS 5.3) in Showdoc, published August 4, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.

References

This page doesn't list everything

Left out here: 76 versions. The JSON record has them.