webPromedium

DesignPulse — Reflected XSS via SVG Badge Injection

hackadvisor

Task: Express/Node.js design platform with SVG badge generator that reflects unsanitized query parameters into SVG text elements; admin bot reviews reported URLs. Solution: Injected script tag via SVG badge name parameter, exfiltrated admin's non-HttpOnly flag cookie to unauthenticated feedback API endpoint.

nodejs xss cookie_stealing express admin_bot svg reflected_xss decoy_flag same_origin_exfiltration badge_injection

admin_bot_exploitationhoneypot_flag_identificationsvg_script_injection_via_unsanitized_parameterreflected_xss_in_svg_badge_endpointsame_origin_exfiltration_via_unauthenticated_api

$ ls tags/ techniques/

nodejs xss cookie_stealing express admin_bot svg reflected_xss decoy_flag same_origin_exfiltration badge_injection

admin_bot_exploitationhoneypot_flag_identificationsvg_script_injection_via_unsanitized_parameterreflected_xss_in_svg_badge_endpointsame_origin_exfiltration_via_unauthenticated_api

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Permission denied (requires tier.pro)

Sign in to access full writeups

$sign in

$ cat writeup.md…

Sign in to access full writeups

Sign in to access full writeups

Similar writeups