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🐍 PyPI
Not in CISA KEV
HIGH severity

CVE-2009-0669 — zodb3

HIGH

CVE-2009-0669 is a high-severity (CVSS 7.5) Improper Authentication vulnerability in zodb3. A fix is available for zodb3 — see the affected versions and patch details below.

Zope Object Database (ZODB) Authentication bypass in ZEO storage servers

Also known asPYSEC-2009-9
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 2, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
2.9%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs87th percentile — riskier than 87% of all scored CVEsHighest risk
0.00%1.17%2.35%3.52%0.7%2.9%May 26Sep 26Nov 26

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

1 pkg affected
🐍zodb3

Real-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

Zope Object Database (ZODB) before 3.8.2, when certain Zope Enterprise Objects (ZEO) database sharing is enabled, allows remote attackers to bypass authentication via vectors involving the ZEO network protocol.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIzodb3all versions3.8.2pip install --upgrade 'zodb3==3.8.2'

Affected Products

1 product · 3 configurations
Application
zodbzope
≤ 3.8.1
2 versions
3.83.8.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for zodb3, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update zodb3 to 3.8.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2009-0669 is resolved across your whole dependency graph.

  3. Workarounds

    Put an independent control in front of the weakness: restrict the affected endpoint or interface to trusted networks, require an additional authentication factor or proxy-level check, and invalidate existing sessions and credentials in case the flaw has already been used.

Frequently Asked Questions

Zope Object Database (ZODB) before 3.8.2, when certain Zope Enterprise Objects (ZEO) database sharing is enabled, allows remote attackers to bypass authentication via vectors involving the ZEO network protocol.
O3 Security · Impact-Aware SCA

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CVE-2009-0669: zodb3 — Fixed in 3.8.2