What is CVE-2026-121417?

CVE-2026-121417 is a high-severity vulnerability in Surrealdb, classified under Use After Free. CVSS score: 7.8/10. Published 2026-11-03.

How severe is CVE-2026-121417?

High severity. CVSS v3 base score is 7.8 out of 10.

Use After Free in Surrealdb

CVE-2026-121417

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.

Vulnerability class: Use-After-Free

Published 2026-11-03 · last modified 2026-11-03.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Surrealdb

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/surrealdb/surrealdb/security/advisories/GHSA-pm86-cc75-q463 (vendor-advisory)
github.com/surrealdb/surrealdb/commit/17584a181979f04f2aaad867332c22db1caa511a (patch)
www.vulncheck.com/advisories/surrealdb-before-3.3.0-use-after-free-via-affinity… (third-party-advisory)

Frequently asked questions

What is CVE-2026-121417?: CVE-2026-121417 is a high-severity vulnerability in Surrealdb, classified under Use After Free. CVSS score: 7.8/10. Published 2026-11-03.
How severe is CVE-2026-121417?: High severity. CVSS v3 base score is 7.8 out of 10.