GHSA-m52x-29pq-w3vv is a medium-severity (CVSS 4.8) Cross-site Scripting (XSS) vulnerability in pannellum. O3 Security confirms whether GHSA-m52x-29pq-w3vv is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Pannellum Cross-Site Scripting due to data not being sanitized for URIs or vbscript
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, a proxy for how much of the ecosystem is exposed.
pannellumnpmDescription
Versions of pannellum prior to 2.5.6 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize URLs for data URIs, which may allow attackers to execute arbitrary code in a victim's browser.
Recommendation
Upgrade to version 2.5.6 or later.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | pannellum | ≥ 2.5.0&&< 2.5.5 | 2.5.5 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pannellum. 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.
Fix
Update pannellum to 2.5.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-m52x-29pq-w3vv 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.
How O3 protects you
O3 pinpoints whether GHSA-m52x-29pq-w3vv 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-m52x-29pq-w3vv. 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-m52x-29pq-w3vv in your dependencies?
O3 detects GHSA-m52x-29pq-w3vv across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.