How severe is GHSA-74r5-g7vc-j2v2?

GHSA-74r5-g7vc-j2v2 has a CVSS score of 6.2/10, rated MEDIUM. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-74r5-g7vc-j2v2?

GHSA-74r5-g7vc-j2v2 affects the following packages: zerovec-derive (crates.io), zerovec-derive (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-74r5-g7vc-j2v2?

Update zerovec-derive to 0.10.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-74r5-g7vc-j2v2 is resolved across your whole dependency graph.

How do I detect GHSA-74r5-g7vc-j2v2 in my crates.io dependencies?

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

How do I mitigate GHSA-74r5-g7vc-j2v2 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.

Is GHSA-74r5-g7vc-j2v2 actively exploited in the wild?

No public exploit code has been indexed for GHSA-74r5-g7vc-j2v2 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-74r5-g7vc-j2v2 published, and has it been updated?

GHSA-74r5-g7vc-j2v2 was published on July 8, 2024 and was last updated on September 10, 2026. 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

MEDIUM severity

zerovec-derive incorrectly uses `#[repr(packed)]`GHSA-74r5-g7vc-j2v2

MEDIUMFix: rustsec/advisory-db#2007

GHSA-74r5-g7vc-j2v2 is a medium-severity (CVSS 6.2) vulnerability in zerovec-derive. A fix is available for zerovec-derive — see the affected versions and patch details below.

Also known asRUSTSEC-2024-0346

Published

Jul 8, 2024

Updated

Sep 10, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Sep 10, 2026 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

2 pkgs affected

🦀zerovec-derive🦀zerovec-derive

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

The affected versions make unsafe memory accesses under the assumption that #[repr(packed)] has a guaranteed field order.

The Rust specification does not guarantee this, and https://github.com/rust-lang/rust/pull/125360 (1.80.0-beta) starts reordering fields of #[repr(packed)] structs, leading to illegal memory accesses.

The patched versions 0.9.7 and 0.10.3 use #[repr(C, packed)], which guarantees field order.

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`zerovec-derive`	≥ 0.10.0&&< 0.10.3	0.10.3`cargo update -p zerovec-derive --precise 0.10.3`
🦀crates.io	`zerovec-derive`	all versions	0.9.7`cargo update -p zerovec-derive --precise 0.9.7`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for zerovec-derive, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update zerovec-derive to 0.10.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-74r5-g7vc-j2v2 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

The affected versions make unsafe memory accesses under the assumption that `#[repr(packed)]` has a guaranteed field order. The Rust specification does not guarantee this, and https://github.com/rust-lang/rust/pull/125360 (1.80.0-beta) starts reordering fields of `#[repr(packed)]` structs, leading to illegal memory accesses. The patched versions `0.9.7` and `0.10.3` use `#[repr(C, packed)]`, which guarantees field order.

O3 Security · Impact-Aware SCA

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