CVE-2022-33977
HIGHCVE-2022-33977 is a high-severity (CVSS 7.5) CWE-776 vulnerability in untangle. O3 Security confirms whether CVE-2022-33977 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
untangle vulnerable to XML Entity Expansion
Real-World Exposure
untangleReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
untangle is a python library to convert XML data to python objects. untangle versions 1.2.0 and earlier improperly restricts recursive entity references in DTDs. By exploiting this vulnerability, a remote unauthenticated attacker may cause a denial-of-service (DoS) condition on the server where the product is running.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | untangle | all versions | 1.2.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for untangle. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update untangle to 1.2.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-33977 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2022-33977 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2022-33977. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2022-33977 in your dependencies?
O3 detects CVE-2022-33977 across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.