How severe is GHSA-3288-p39f-rqpv?

No CVSS score has been assigned to GHSA-3288-p39f-rqpv yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-3288-p39f-rqpv?

GHSA-3288-p39f-rqpv affects the following packages: keccak (crates.io). Ecosystems affected: crates.io.

How do I fix GHSA-3288-p39f-rqpv?

Update keccak to 0.1.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3288-p39f-rqpv is resolved across your whole dependency graph.

How do I detect GHSA-3288-p39f-rqpv in my crates.io dependencies?

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

How do I mitigate GHSA-3288-p39f-rqpv 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-3288-p39f-rqpv actively exploited in the wild?

No public exploit code has been indexed for GHSA-3288-p39f-rqpv 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-3288-p39f-rqpv published, and has it been updated?

GHSA-3288-p39f-rqpv was published on February 19, 2026 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

Unsoundness in opt-in ARMv8 assembly backend for `keccak`GHSA-3288-p39f-rqpv

Fix: RustCrypto/sponges#101

GHSA-3288-p39f-rqpv is a security vulnerability in keccak. A fix is available for keccak — see the affected versions and patch details below.

Also known asRUSTSEC-2026-0012

Published

Feb 19, 2026

Updated

Sep 10, 2026

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

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

Real-World Exposure

1 pkg affected

🦀keccak

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

Summary

The asm! block enabled by the off-by-default asm feature, when enabled on ARMv8 targets, misspecified the operand type for all of its operands, using in for pointers and values which were subsequently mutated by operations performed within the assembly block.

Impact

It's unclear what practical impact, if any, this actually had. Incorrect operand types are technically undefined behavior, however changing them had no actual impact on the generated assembly for these targets. The possibility still exists that it may lead to potential memory safety or other issues on hypothetical future versions of rustc.

Mitigation

The operand types were changed from in to inout, and the impacted versions of the keccak crate were yanked.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
🦀crates.io	`keccak`	all versions	0.1.6`cargo update -p keccak --precise 0.1.6`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for keccak, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update keccak to 0.1.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-3288-p39f-rqpv 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

### Summary The `asm!` block enabled by the off-by-default `asm` feature, when enabled on ARMv8 targets, misspecified the operand type for all of its operands, using `in` for pointers and values which were subsequently mutated by operations performed within the assembly block. ### Impact It's unclear what practical impact, if any, this actually had. Incorrect operand types are technically undefined behavior, however changing them had no actual impact on the generated assembly for these targets. The possibility still exists that it may lead to potential memory safety or other issues on hypot

O3 Security · Impact-Aware SCA

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