CVE-2024-34528 is a high-severity (CVSS 7.7) CWE-367 vulnerability in wordops. A fix is available for wordops — see the affected versions and patch details below.
WordOps has TOCTOU race condition
Exploitation Status
No confirmed exploitation observed yet
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2024-34528.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
wordopsReal-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
WordOps through 3.20.0 has a wo/cli/plugins/stack_pref.py TOCTOU race condition because the conf_path os.open does not use a mode parameter during file creation.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | wordops | all versions | 3.21.0pip install --upgrade 'wordops==3.21.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for wordops, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update wordops to 3.21.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-34528 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.
Frequently Asked Questions
Is CVE-2024-34528 in your dependencies?
Find it across PyPI, including transitive dependencies.