What’s Vulnerable › Vulnerabilities

CVE-2021-3989: Open Redirect in star7th/showdoc

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-12-01 · updated 2026-06-17
• Weakness: CWE-601

Description

showdoc is vulnerable to URL Redirection to Untrusted Site

Affected products

• star7th/showdoc: before 2.9.13 — fixed in 2.9.13

How to fix

Upgrade to a fixed version: star7th/showdoc 2.9.13. Check the vendor advisory for mitigations.

References

• https://github.com/star7th/showdoc/commit/335afc7ed6d6627c3d0434aa9acc168c77117614
• https://huntr.dev/bounties/ffc61eff-efea-42c5-92c2-e043fdf904d5
• https://github.com/star7th/showdoc/commit/335afc7ed6d6627c3d0434aa9acc168c77117614
• https://huntr.dev/bounties/ffc61eff-efea-42c5-92c2-e043fdf904d5

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