GHSA-crjg-w57m-rqqf is a medium-severity (CVSS 6.5) vulnerability in dnsjava:dnsjava. A fix is available for dnsjava:dnsjava — see the affected versions and patch details below.
DNSJava vulnerable to KeyTrap - Denial-of-Service Algorithmic Complexity Attacks
Real-World Exposure
dnsjava:dnsjava☕org.jitsi:dnssecjavaReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Impact
Users using the ValidatingResolver for DNSSEC validation can run into CPU exhaustion with specially crafted DNSSEC-signed zones.
Patches
Users should upgrade to dnsjava v3.6.0
Workarounds
Although not recommended, only using a non-validating resolver, will remove the vulnerability.
References
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | dnsjava:dnsjava | ≥ 3.5.0&&< 3.6.0 | 3.6.0dnsjava:dnsjava:3.6.0 |
| ☕Maven | org.jitsi:dnssecjava | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for dnsjava:dnsjava, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update dnsjava:dnsjava to 3.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-crjg-w57m-rqqf 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-crjg-w57m-rqqf can be triaged on real exposure rather than presence alone.
Tailored to GHSA-crjg-w57m-rqqf. 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-crjg-w57m-rqqf in your dependencies?
O3 Security finds GHSA-crjg-w57m-rqqf across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.