---
id: CVE-2026-121417
title: >-
  SurrealDB before 3.3.0 Use-After-Free via affinitypool spawn_local in KV
  Backends
summary: >-
  SurrealDB before 3.3.0 contains a use-after-free vulnerability in
  surrealdb-core KV backends that pass borrowed transaction state into
  affinitypool::spawn_local closures relying on future Drop for safety. Rust
  embedders that leak a dispa…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-416
vendor: surrealdb
product: surrealdb
affected:
  - surrealdb < 3.3.0
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-03T17:06:00.194955Z'
exploitAvailable: true
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T17:06:36.341Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121417'
references:
  - url: >-
      https://github.com/surrealdb/surrealdb/security/advisories/GHSA-pm86-cc75-q463
    label: GitHub Security Advisory (GHSA-pm86-cc75-q463)
  - url: >-
      https://github.com/surrealdb/surrealdb/commit/17584a181979f04f2aaad867332c22db1caa511a
    label: Patch Commit
  - url: >-
      https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-use-after-free-via-affinitypool-spawn-local-in-kv-backends
    label: >-
      VulnCheck Advisory: SurrealDB before 3.3.0 Use-After-Free via affinitypool
      spawn_local in KV Backends
tags:
  - cve.org
  - exploit-available
epss: 0.002
epssPercentile: 0.10008
ingestedAt: '2026-11-05T20:33:06.304Z'
---

## Overview

SurrealDB before 3.3.0 contains a use-after-free vulnerability in surrealdb-core KV backends that pass borrowed transaction state into affinitypool::spawn_local closures relying on future Drop for safety. Rust embedders that leak a dispatched future (e.g. via mem::forget) and drop the transaction cause pool workers to read and write freed memory, risking crashes or memory corruption.

## Affected

- `surrealdb < 3.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.