How severe is GHSA-x4mq-m75f-mx8m?

GHSA-x4mq-m75f-mx8m has a CVSS score of 9.8/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by GHSA-x4mq-m75f-mx8m?

GHSA-x4mq-m75f-mx8m affects the following packages: windows (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-x4mq-m75f-mx8m?

Update windows to 0.32.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x4mq-m75f-mx8m is resolved across your whole dependency graph.

How do I detect GHSA-x4mq-m75f-mx8m in my crates.io dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for windows, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-x4mq-m75f-mx8m if there is no patch (or I can't update yet)?

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 does O3 Security protect against GHSA-x4mq-m75f-mx8m?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-x4mq-m75f-mx8m can be triaged on real exposure rather than presence alone.

Is GHSA-x4mq-m75f-mx8m actively exploited in the wild?

No public exploit code has been indexed for GHSA-x4mq-m75f-mx8m yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-x4mq-m75f-mx8m published, and has it been updated?

GHSA-x4mq-m75f-mx8m was published on June 17, 2022 and was last updated on November 8, 2023. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

🦀

🦀 crates.io

Not in CISA KEV

CRITICAL severity

GHSA-x4mq-m75f-mx8m — windows

CRITICALFix: microsoft/windows-rs@afe3252

GHSA-x4mq-m75f-mx8m is a critical-severity (CVSS 9.8) vulnerability in windows. A fix is available for windows — see the affected versions and patch details below.

Delegate functions are missing `Send` bound

Also known asRUSTSEC-2022-0008

Published

Jun 17, 2022

Updated

Nov 8, 2023

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Nov 8, 2023 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

🦀windows

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.

Description

Affected versions of this crate did not require event handlers to have Send bound despite there being no guarantee of them being called on any particular thread, which can potentially lead to data races and undefined behavior.

The flaw was corrected in commit afe3252 by adding Send bounds.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`windows`	≥ 0.1.2&&< 0.32.0	0.32.0`cargo update -p windows --precise 0.32.0`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for windows, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update windows to 0.32.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-x4mq-m75f-mx8m 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-x4mq-m75f-mx8m can be triaged on real exposure rather than presence alone.

Tailored to GHSA-x4mq-m75f-mx8m. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Affected versions of this crate did not require event handlers to have `Send` bound despite there being no guarantee of them being called on any particular thread, which can potentially lead to data races and undefined behavior. The flaw was corrected in commit [afe3252](https://github.com/microsoft/windows-rs/commit/afe32525c22209aa8f632a0f4ad607863b51796a) by adding `Send` bounds.

O3 Security · Impact-Aware SCA

Is GHSA-x4mq-m75f-mx8m in your dependencies?

O3 Security finds GHSA-x4mq-m75f-mx8m across crates.io dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works