CVE-2026-121417

High

Description

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.

SeverityHigh

CVSS7.8

Exploit probability—

ProductSurrealdb

PublishedNov 3, 2026

First seenNov 4, 2026

Weakness typeCWE-416Use after free

How to fix

Update

surrealdb surrealdb3.3.0 or later

Patches

github.com/surrealdb/surrealdb/commit/17584a181979f04f2aaad867332c22db1caa511a

Vendor advisories

github.com/surrealdb/surrealdb/security/advisories/GHSA-pm86-cc75-q463

Affected products

Product	Affected versions	Fixed in
surrealdb surrealdb	v < 3.3.0	3.3.0

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