CVE-2022-4722 is a high-severity (CVSS 7.2) CWE-305 vulnerability in rdiffweb. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for rdiffweb — see the affected versions and patch details below.
Authentication Bypass by Primary Weakness in ikus060/rdiffweb
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for CVE-2022-4722.
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
rdiffwebReal-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
In rdiffweb prior to 2.5.5, the username field is not unique to users. This allows exploitation of primary key logic by creating the same name with different combinations & may allow unauthorized access.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | rdiffweb | all versions | 2.5.5pip install --upgrade 'rdiffweb==2.5.5' |
Affected Products
rdiffwebikus-softResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for rdiffweb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update rdiffweb to 2.5.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-4722 is resolved across your whole dependency graph.
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
Is CVE-2022-4722 in your dependencies?
Find it across PyPI, including transitive dependencies.