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Vulnerability record · CVE-2018-18903 · published 3 November 2018
CVE-2018-18903: Vanillaforums vanilla code injection vulnerability
Vanillaforums · Vanilla
Vanilla 2.6.x before 2.6.4 allows remote code execution.
9.8 CVSS 3.0 Critical EPSS 5.2% · top 7.9% CWE-94 · Code injection
9.8CVSS 3.0 base score, v2 7.5
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 2 tagged exploit
17 Jun 2026Last modified by NVD
Description
Vanilla 2.6.x before 2.6.4 allows remote code execution.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
| Link | Tags |
|---|---|
| https://github.com/vanilla/vanilla/releases/tag/Vanilla_2.6.4 | Release Notes |
| https://open.vanillaforums.com/discussion/36771/security-update-vanilla-2-6-4 | Release NotesVendor Advisory |
| https://srcincite.io/blog/2018/10/02/old-school-pwning-with-new-school-tricks-vanilla-forums-remote-code-execution.html | ExploitThird Party Advisory |
| https://github.com/vanilla/vanilla/releases/tag/Vanilla_2.6.4 | Release Notes |
| https://open.vanillaforums.com/discussion/36771/security-update-vanilla-2-6-4 | Release NotesVendor Advisory |
| https://srcincite.io/blog/2018/10/02/old-school-pwning-with-new-school-tricks-vanilla-forums-remote-code-execution.html | ExploitThird Party Advisory |
Track CVE-2018-18903 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
9.8CVE-2011-3614Vanillaforums vanilla vulnerabilityAn Access Control vulnerability exists in the Facebook, Twitter, and Embedded plugins in Vanilla Forums before 2.0.17.9.EPSS 2.0%7.5CVE-2011-3613Vanillaforums vanilla information exposure vulnerabilityAn issue exists in Vanilla Forums before 2.0.17.9 due to the way cookies are handled.EPSS 1.7%7.5CVE-2016-10073Vanilla Forums email domain spoofing via Host headerThe from method in library/core/class.email.php in Vanilla Forums before 2.3.1 trusts the HTTP Host header when constructing the sender address of ou…EPSS 84%analysed7.5CVE-2013-3527Vanillaforums vanilla sql injection vulnerabilityMultiple SQL injection vulnerabilities in Vanilla Forums before 2.0.18.8 allow remote attackers to execute arbitrary SQL commands via the parameter n…EPSS 3.5%7.5CVE-2013-3528Vanillaforums vanilla vulnerabilityUnspecified vulnerability in the update check in Vanilla Forums before 2.0.18.8 has unspecified impact and remote attack vectors, related to "object …EPSS 5.7%7.2CVE-2018-19499Vanillaforums vanilla deserialization of untrusted data vulnerabilityVanilla before 2.5.5 and 2.6.x before 2.6.2 allows Remote Code Execution because authenticated administrators have a reachable call to unserialize in…EPSS 2.0%6.5CVE-2018-16410Vanillaforums vanilla sql injection vulnerabilityVanilla before 2.6.1 allows SQL injection via an invitationID array to /profile/deleteInvitation, related to applications/dashboard/models/class.invi…EPSS 0.94%6.4CVE-2011-0910Vanillaforums vanilla vulnerabilityThe cookie implementation in Vanilla Forums before 2.0.17.6 makes it easier for remote attackers to spoof signed requests, and consequently obtain ac…EPSS 1.0%
Source: NIST National Vulnerability Database (record CVE-2018-18903), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.
