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CRITICAL severity

Origin Validation Error in rdiffwebGHSA-824x-jcxf-hpfg

CRITICALFix: ikus060/rdiffweb@afc1bdf

GHSA-824x-jcxf-hpfg is a critical-severity (CVSS 9.8) CWE-346 vulnerability in rdiffweb. A fix is available for rdiffweb — see the affected versions and patch details below.

Also known asCVE-2022-3457PYSEC-2022-43161
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • 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 GHSA-824x-jcxf-hpfg.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs38th percentile — riskier than 38% of all scored CVEsHighest risk
0.00%0.31%0.63%0.94%0.2%0.4%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

ikus060/rdiffweb prior to 2.5.0a5 did not enforce origin validation in web traffic. Users are advised to upgrade to version 2.5.0a5.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIrdiffweball versions2.5.0a5pip install --upgrade 'rdiffweb==2.5.0a5'

Affected Products

1 product · 5 configurations
Application
rdiffwebikus-soft
< 2.5.0
1 version
2.5.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update rdiffweb to 2.5.0a5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-824x-jcxf-hpfg is resolved across your whole dependency graph.

  3. 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

ikus060/rdiffweb prior to 2.5.0a5 did not enforce origin validation in web traffic. Users are advised to upgrade to version 2.5.0a5.
O3 Security · Impact-Aware SCA

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Origin Validation Error in rdiffweb (Critical 9.8)