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fix: sanitize error output in server validation logs

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Escape dynamic error messages with htmlspecialchars() before
concatenating into HTML strings stored in validation_logs. Add a
Purify-based mutator on Server model as defense-in-depth, with a
dedicated HTMLPurifier config that allows only safe structural tags.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Andras Bacsai
2026-03-26 18:36:36 +01:00
co-authored by Claude Opus 4.6
parent e39678aea5
commit 103d5b6c06
7 changed files with 102 additions and 5 deletions
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app/Livewire/Server/ValidateAndInstall.php
+2 -1
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@@ -89,7 +89,8 @@ class ValidateAndInstall extends Component
$this->authorize('update', $this->server);
['uptime' => $this->uptime, 'error' => $error] = $this->server->validateConnection();
if (! $this->uptime) {
$this->error = 'Server is not reachable. Please validate your configuration and connection.<br>Check this <a target="_blank" class="text-black underline dark:text-white" href="https://coolify.io/docs/knowledge-base/server/openssh">documentation</a> for further help. <br><br><div class="text-error">Error: '.$error.'</div>';
$sanitizedError = htmlspecialchars($error ?? '', ENT_QUOTES, 'UTF-8');
$this->error = 'Server is not reachable. Please validate your configuration and connection.<br>Check this <a target="_blank" class="text-black underline dark:text-white" href="https://coolify.io/docs/knowledge-base/server/openssh">documentation</a> for further help. <br><br><div class="text-error">Error: '.$sanitizedError.'</div>';
$this->server->update([
'validation_logs' => $this->error,
]);