GHSA-5cf7-cxrf-mq73 is a medium-severity (CVSS 4.6) CWE-285 vulnerability in bostr. A fix is available for bostr — see the affected versions and patch details below.
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-5cf7-cxrf-mq73.
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
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
bostrnpmDescription
Even with authorized_keys is filled with allowed pubkeys, If noscraper is enabled, It will allow anyone to use bouncer even it's pubkey is not in authorized_keys.
Impact
- Private bouncer
Patches
Available on version 3.0.10
Workarounds
Disable noscraper if you have authorized_keys being set in config
References
This line of code is the cause.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | bostr | all versions | 3.0.10npm install bostr@3.0.10 |
Affected Products
bostryonleDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for bostr, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update bostr to 3.0.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5cf7-cxrf-mq73 is resolved across your whole dependency graph.
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
Is GHSA-5cf7-cxrf-mq73 in your dependencies?
Find it across npm, including transitive dependencies.