CVE-2015-8766
Description
Multiple cross-site scripting (XSS) vulnerabilities in content/content.systempreferences.php in Symphony CMS before 2.6.4 allow remote attackers to inject arbitrary web script or HTML via the (1) email_sendmail[from_name], (2) email_sendmail[from_address], (3) email_smtp[from_name], (4) email_smtp[from_address], (5) email_smtp[host], (6) email_smtp[port], (7) jit_image_manipulation[trusted_external_sites], or (8) maintenance_mode[ip_whitelist] parameters to system/preferences.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
symphonycms/symphony-2Packagist | < 2.6.4 | 2.6.4 |
Affected products
1Patches
1651e150091c6Sanitize the POST for the system/preferences/
1 file changed · +5 −2
symphony/content/content.systempreferences.php+5 −2 modified@@ -196,7 +196,7 @@ public function action() Symphony::ExtensionManager()->notifyMembers('CustomActions', '/system/preferences/'); if (isset($_POST['action']['save'])) { - $settings = $_POST['settings']; + $settings = filter_var_array($_POST['settings'], FILTER_SANITIZE_STRING); /** * Just prior to saving the preferences and writing them to the `CONFIG` @@ -210,7 +210,10 @@ public function action() * @param array $errors * An array of errors passed by reference */ - Symphony::ExtensionManager()->notifyMembers('Save', '/system/preferences/', array('settings' => &$settings, 'errors' => &$this->_errors)); + Symphony::ExtensionManager()->notifyMembers('Save', '/system/preferences/', array( + 'settings' => &$settings, + 'errors' => &$this->_errors + )); if (!is_array($this->_errors) || empty($this->_errors)) { if (is_array($settings) && !empty($settings)) {
Vulnerability mechanics
Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
8- www.getsymphony.com/download/releases/version/2.6.4/nvdPatchVendor Advisory
- seclists.org/fulldisclosure/2015/Dec/60nvdExploitWEB
- github.com/advisories/GHSA-4c5w-qqfg-grf3ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2015-8766ghsaADVISORY
- www.getsymphony.com/download/releases/version/2.6.4ghsaWEB
- github.com/symphonycms/symphony-2/commit/651e150091c61fb60ad1dff2bc2166185a83d9d6nvdWEB
- web.archive.org/web/20210321090853/https://cybersecurityworks.com/zerodays/cve-2015-8766-getsymphoney.htmlghsaWEB
- cybersecurityworks.com/zerodays/cve-2015-8766-getsymphoney.htmlnvd
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