EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
serverpod_clientReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Pub packages — download data is not available via public APIs for these ecosystems.
Description
This bug bypassed the validation of TSL certificates on all none web HTTP clients in the serverpod_client package. Making them susceptible to a man in the middle attack against encrypted traffic between the client device and the server.
An attacker would need to be able to intercept the traffic and highjack the connection to the server for this vulnerability to be used.
Impact
All versions of serverpod_client pre 1.2.6
Patches
Upgrading to version 1.2.6 resolves this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🎯Pub | serverpod_client | all versions | 1.2.6 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for serverpod_client. 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 serverpod_client to 1.2.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-h6x7-r5rg-x5fw 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-h6x7-r5rg-x5fw 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-h6x7-r5rg-x5fw. 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-h6x7-r5rg-x5fw in your dependencies?
O3 detects GHSA-h6x7-r5rg-x5fw across Pub dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.