What’s Vulnerable › Vulnerabilities

CVE-2023-3431: Improper Access Control in plantuml/plantuml

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-27 · updated 2026-06-17
• Weakness: CWE-284

Description

Improper Access Control in GitHub repository plantuml/plantuml prior to 1.2023.9.

Affected products

• Fedoraproject Fedora: 39
• net.sourceforge.plantuml:plantuml: before 1.2023.9 — fixed in 1.2023.9

How to fix

Upgrade to a fixed version: net.sourceforge.plantuml:plantuml 1.2023.9. Check the vendor advisory for mitigations.

References

• https://github.com/plantuml/plantuml/commit/fbe7fa3b25b4c887d83927cffb1009ec6cb8ab1e
• https://huntr.dev/bounties/fa741f95-b53c-4ed7-b157-e32c5145164c
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FV7XL3CY3K3K5ER3ASMEQA546MIQQ7QM/
• https://github.com/plantuml/plantuml/commit/fbe7fa3b25b4c887d83927cffb1009ec6cb8ab1e
• https://huntr.dev/bounties/fa741f95-b53c-4ed7-b157-e32c5145164c
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FV7XL3CY3K3K5ER3ASMEQA546MIQQ7QM/

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