shoko d0534aedbf Fix #5: HTML injection in Telegram messages ...

Add escape_html() function to prevent HTML injection in Telegram
parse_mode=HTML messages. Apply escaping to event titles inserted
into <a> tags in send_to_telegram().

- Add escape_html() using stdlib html.escape()
- Escape match event titles (line 648) and non-match titles (line 676)
- Add TestHtmlInjection with 2 tests proving fix:
  - <script> tags escaped as &lt;script&gt;
  - & ampersands escaped as &amp;
- Fixes HIGH severity: titles from Polymarket API were inserted
  without escaping, allowing malformed HTML in Telegram messages

2026-03-25 11:42:42 +00:00

8.0 KiB

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