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harden: disable external XML entity processing in overlay_window.py - #9

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harden: disable external XML entity processing in overlay_window.py#9
anupamme wants to merge 1 commit into
febilly:mainfrom
anupamme:fix-repo-realtime-subtitle-xxe-svg-symbol-loader

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@anupamme anupamme commented Sep 2, 2026

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Summary

Harden input handling in overlay_window.py (flagged by semgrep).

Vulnerability

Field Value
ID gitlab.bandit.B313.B314.B315.B316.B318.B319.B320.B405.B406.B407.B408.B409.B410
Severity HIGH
Scanner semgrep
Rule gitlab.bandit.B313.B314.B315.B316.B318.B319.B320.B405.B406.B407.B408.B409.B410
File overlay_window.py:451
Assessment Defensive hardening

Description: Found use of the native Python XML libraries, which is vulnerable to XML external entity (XXE)
attacks. The Python documentation recommends the 'defusedxml' library instead. Use 'defusedxml'.
See https://github.com/tiran/defusedxml for more information.

Threat Model Context

This is a private Node.js application (not published to npm). Vulnerabilities affect this application's own runtime only.

Changes

  • overlay_window.py
  • requirements.txt

Behavior Preservation

The change is scoped to 2 files on the vulnerable path.


This patch removes an exploit primitive — a code pattern that, while not independently exploitable today, could be chained with other weaknesses by automated exploit-development tooling. Proactive removal of such primitives raises the bar against increasingly capable automated attack tools.


Automated security fix by OrbisAI Security

…B408.B409.B410 security vulnerability

Automated security fix generated by OrbisAI Security
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