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CVE-2021-28305

CRITICAL

CVE-2021-28305 is a critical-severity (CVSS 9.8) Use After Free vulnerability in diesel. O3 Security confirms whether CVE-2021-28305 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Fix a use-after-free bug in diesels Sqlite backend

Also known asGHSA-j8q9-5rp9-4mv9RUSTSEC-2021-0037
Published
Mar 12, 2021
Updated
Mar 14, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🦀diesel

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

An issue was discovered in the diesel crate before 1.4.6 for Rust. There is a use-after-free in the SQLite backend because the semantics of sqlite3_column_name are not followed.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🦀crates.iodieselall versions1.4.6

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for diesel. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update diesel to 1.4.6 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-28305 is resolved across your whole dependency graph.

  3. 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.

  4. How O3 protects you

    O3 pinpoints whether CVE-2021-28305 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to CVE-2021-28305. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

An issue was discovered in the diesel crate before 1.4.6 for Rust. There is a use-after-free in the SQLite backend because the semantics of sqlite3_column_name are not followed.
O3 Security · Impact-Aware SCA

Is CVE-2021-28305 in your dependencies?

O3 detects CVE-2021-28305 across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.