What’s Vulnerable › Vulnerabilities

CVE-2018-18903

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-11-03 · updated 2026-06-17
• Weakness: CWE-94

Description

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Affected products

• Vanilla Forums: from 2.6.0 before 2.6.4 — fixed in 2.6.4

How to fix

Upgrade to a fixed version: Vanilla Forums 2.6.4. Check the vendor advisory for mitigations.

References

• https://github.com/vanilla/vanilla/releases/tag/Vanilla_2.6.4
• https://open.vanillaforums.com/discussion/36771/security-update-vanilla-2-6-4
• https://srcincite.io/blog/2018/10/02/old-school-pwning-with-new-school-tricks-vanilla-forums-remote-code-execution.html
• https://github.com/vanilla/vanilla/releases/tag/Vanilla_2.6.4
• https://open.vanillaforums.com/discussion/36771/security-update-vanilla-2-6-4
• https://srcincite.io/blog/2018/10/02/old-school-pwning-with-new-school-tricks-vanilla-forums-remote-code-execution.html

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