CVE-2009-4762 — moin
HIGHCVE-2009-4762 is a high-severity (CVSS 7.5) CWE-264 vulnerability in moin. A fix is available for moin — see the affected versions and patch details below.
MoinMoin Improper Access Control vulnerability
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
moinReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Debian:10 packages — download data is not available via public APIs for these ecosystems.
Description
MoinMoin 1.7.x before 1.7.3 and 1.8.x before 1.8.3 checks parent ACLs in certain inappropriate circumstances during processing of hierarchical ACLs, which allows remote attackers to bypass intended access restrictions by requesting an item, a different vulnerability than CVE-2008-6603.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦Debian:10 | moin | all versions | 1.9.2-1 |
Affected Products
moinmoinmoinmoDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for moin, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update moin to 1.9.2-1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2009-4762 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-2009-4762 in your dependencies?
Find it across Debian:10, including transitive dependencies.