CVE-2022-42975 is a high-severity (CVSS 7.5) CWE-863 vulnerability in phoenix. A fix is available for phoenix — see the affected versions and patch details below.
Phoenix before 1.6.14 mishandles check_origin wildcarding
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- 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 CVE-2022-42975.
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
phoenixReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Hex packages — download data is not available via public APIs for these ecosystems.
Description
socket/transport.ex in Phoenix before 1.6.14 mishandles check_origin wildcarding. NOTE: LiveView applications are unaffected by default because of the presence of a LiveView CSRF token.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💧Hex | phoenix | all versions | 1.6.14mix deps.update phoenix |
Affected Products
phoenixphoenixframeworkDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for phoenix, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update phoenix to 1.6.14 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-42975 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-2022-42975 in your dependencies?
Find it across Hex, including transitive dependencies.