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
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
nocodbnpmDescription
Summary
Two concurrent token-exchange requests using the same OAuth authorization code could
each mint a distinct valid (access_token, refresh_token) pair, breaking the
single-use guarantee that PKCE relies on.
Details
The token-exchange flow read is_used and called markAsUsed as an unconditional
update at the end of the path. A new OAuthAuthorizationCode.claimByCode method now
performs an atomic compare-and-swap (WHERE code = ? AND is_used = false) and is
called immediately before OAuthToken.insert, after redirect-URI, PKCE, and client
authentication have all succeeded. Only the first concurrent caller's UPDATE wins;
the rest see invalid_grant: Authorization code has already been used.
Impact
An attacker who has observed an authorization code and the corresponding PKCE verifier (for example through a malicious OAuth-aware client or by racing a real exchange) could obtain a long-lived refresh token in addition to the legitimate one.
Credit
This issue was reported by @eddieran.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | nocodb | all versions | 2026.05.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nocodb. 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 nocodb to 2026.05.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8m7c-hf24-5g47 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-8m7c-hf24-5g47 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-8m7c-hf24-5g47. 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-8m7c-hf24-5g47 in your dependencies?
O3 detects GHSA-8m7c-hf24-5g47 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.