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MEDIUM severity

CVE-2022-3438 — rdiffweb

MEDIUMFix: ikus060/rdiffweb@4d464b4

CVE-2022-3438 is a medium-severity (CVSS 5.7) Open Redirect 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.

Open Redirect in ikus060/rdiffweb

Also known asGHSA-8g9m-vv69-7j99PYSEC-2022-43158
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs53th percentile — riskier than 53% of all scored CVEsHighest risk
0.00%0.39%0.79%1.18%0.3%0.7%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
🐍rdiffweb

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

A lack of user input validation leads to an open redirect vulnerability in rdiffweb prior to 2.5.0a4.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIrdiffweball versions2.5.0a4pip install --upgrade 'rdiffweb==2.5.0a4'

Affected Products

1 product · 4 configurations
Application
rdiffwebikus-soft
< 2.5.0
1 version
2.5.0
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Open Redirect in GitHub repository ikus060/rdiffweb prior to 2.5.0a4.

huntr.devNVDOct 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

    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.

  2. Fix

    Update rdiffweb to 2.5.0a4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-3438 is resolved across your whole dependency graph.

  3. Workarounds

    Stop reflecting attacker-controlled destinations: resolve every redirect target against an allowlist of paths or hosts you own, prefer a server-side key over a full URL in the request, and reject absolute URLs entirely where the flow only ever needs a relative one.

Frequently Asked Questions

A lack of user input validation leads to an open redirect vulnerability in rdiffweb prior to 2.5.0a4.
O3 Security · Impact-Aware SCA

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CVE-2022-3438: rdiffweb Open Redirect — Fixed in 2.5.0a4