# RUSTSEC-2026-0454 - Data race and double free via unsound `Send`/`Sync` in `reblessive`

Source: https://junglewise.ai/threats/rustsec-2026-0454-data-race-and-double-free-via-unsound-send-sync-in-b23614bb  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-03  
License: CC BY 4.0 with a link back

Severity: low · CVSS 3.1 · Published 2026-11-03

Data race and double free via unsound `Send`/`Sync` in `reblessive`

Technologies: [surrealdb-core (crates.io)](https://junglewise.ai/threats/technologies/crates-io-surrealdb-core). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is This vulnerability exploited in the wild?** No. Junglewise Threat Intelligence has no report of This vulnerability being exploited in the wild.

**How severe is This vulnerability?** Low severity, with a CVSS score of 3.1, published 3 November 2026.

**Which products and versions are affected?** surrealdb-core (crates.io) SEMVER:introduced=0.0.0-0,fixed=4.0.0.

**Is there a fix for This vulnerability?** Yes. surrealdb-core (crates.io): upgrade to 4.0.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected?** Check whether you run surrealdb-core (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- surrealdb-core (crates.io): upgrade to 4.0.0 or later

  ```sh
  cargo update -p surrealdb-core
  ```


## Affected products

- surrealdb-core (crates.io) SEMVER:introduced=0.0.0-0,fixed=4.0.0

## Identifiers

- GHSA-m9qr-4rcq-3jhc
- RUSTSEC-2026-0454

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- [SurrealDB denial of service via uncaught exception in parser](https://junglewise.ai/threats/cve-2024-58361-surrealdb-denial-of-service-via-uncaught-exception-in-parser)