GHSA-pwf9-q62p-v7wc is a medium-severity (CVSS 5.8) CWE-674 vulnerability in com.squareup.wire:wire-runtime. A fix is available for com.squareup.wire:wire-runtime — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-pwf9-q62p-v7wc.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
com.squareup.wire:wire-runtimeReal-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
Square Wire before 5.2.0 does not enforce a recursion limit on nested groups in ByteArrayProtoReader32.kt and ProtoReader.kt.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.squareup.wire:wire-runtime | all versions | 5.2.0com.squareup.wire:wire-runtime:5.2.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.squareup.wire:wire-runtime, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update com.squareup.wire:wire-runtime to 5.2.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-pwf9-q62p-v7wc 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.
Frequently Asked Questions
Is GHSA-pwf9-q62p-v7wc in your dependencies?
Find it across Maven, including transitive dependencies.