GHSA-jxhh-4648-vpp3
GHSA-jxhh-4648-vpp3 is a CWE-770 vulnerability in setasign/fpdi. O3 Security confirms whether GHSA-jxhh-4648-vpp3 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
FPDI allows Memory Exhaustion (OOM) in PDF Parser which leads to Denial of Service
Blast Radius
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Description
Impact
This is a significant Denial of Service (DoS) vulnerability. Any application that uses FPDI to process user-supplied PDF files is at risk. An attacker can upload a small, malicious PDF file that will cause the server-side script to crash due to memory exhaustion. Repeated attacks can lead to sustained service unavailability.
Patches
Fixed as of version 2.6.4
Workarounds
No.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | setasign/fpdi | all versions | 2.6.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for setasign/fpdi. 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 setasign/fpdi to 2.6.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-jxhh-4648-vpp3 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-jxhh-4648-vpp3 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-jxhh-4648-vpp3. 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-jxhh-4648-vpp3 in your dependencies?
O3 detects GHSA-jxhh-4648-vpp3 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.