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Potential fix for code scanning alert no. 28: Incomplete multi-character sanitization #8

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Potential fix for code scanning alert no. 28: Incomplete multi-character sanitization #8

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a8ba49d
Potential fix for code scanning alert no. 28: Incomplete multi-charac…
manucian-official May 17, 2026
baeca1f
Merge branch 'main' into alert-autofix-28
manucian-official May 17, 2026
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36 changes: 34 additions & 2 deletions apps/gateway/src/interceptors/sanitize.interceptor.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -207,6 +207,36 @@ export class SanitizeInterceptor implements NestInterceptor {
*/

private sanitizeString(value: string): string {
let sanitized = value;
let previous: string;

do {
previous = sanitized;

sanitized = sanitized
/**
* ========================================================
* Script Tag Neutralization
* ========================================================
*/

.replace(/<script.*?>.*?<\/script>/gi, '')

/**
* ========================================================
* Dangerous Inline Event Removal
* ========================================================
*/

.replace(/on\w+=".*?"/gi, '')

/**
* ========================================================
* HTML Tag Stripping
* ========================================================
*/

.replace(/<[^>]+>/g, '')
const htmlSanitized = sanitizeHtml(value, {
allowedTags: [],
allowedAttributes: {},
Expand All @@ -228,7 +258,9 @@ export class SanitizeInterceptor implements NestInterceptor {
* ========================================================
*/

.trim()
);
.trim();
} while (sanitized !== previous);

return sanitized;
}
}
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