GHSA-465f-mxxh-grc4
MEDIUMGHSA-465f-mxxh-grc4 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in baremetrics-calendar. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether GHSA-465f-mxxh-grc4 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Baremetrics date range picker vulnerable to Cross-site Scripting
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
baremetrics-calendarnpmDescription
The Baremetrics date range picker is a solution for selecting both date ranges and single dates from a single calender view. Versions 1.0.14 and prior are prone to cross-site scripting (XSS) when handling untrusted placeholder entries. An attacker who is able to influence the field placeholder when creating a Calendar instance is able to supply arbitrary html or javascript that will be rendered in the context of a user leading to XSS. There are no known patches for this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | baremetrics-calendar | all versions | No fix |
Research 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 baremetrics-calendar. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Remediation status
No patched version of baremetrics-calendar has shipped for GHSA-465f-mxxh-grc4 yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
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.
How O3 protects you
O3 pinpoints whether GHSA-465f-mxxh-grc4 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-465f-mxxh-grc4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-465f-mxxh-grc4 in your dependencies?
O3 detects GHSA-465f-mxxh-grc4 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.