CVE-2026-121417 json
SurrealDB before 3.3.0 Use-After-Free via affinitypool spawn_local in KV Backends
published 21d ago modified 3d ago also GHSA-pm86-cc75-q463 , RUSTSEC-2026-0453 , EUVD-2026-115949
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
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 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.
Patch / fix
- crates.io surrealdb 3.3.0
- surrealdb surrealdb 3.3.0
Is CVE-2026-121417 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 6d ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/surrealdb/surrealdb/security/advisories/GHSA-pm86-cc75-q463 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
| CNA | 4.0 | 8.8 | CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| OSV | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | surrealdb | >=0.0.0-0, <3.3.0 |
3.3.0 |
Affected products
- surrealdb surrealdb
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
github.com
/surrealdb/surrealdb/commit/17584a181979f04f2aaad867332c22db1caa511a
patch
-
github.com
/surrealdb/surrealdb/commit/8156ff691b1861814199e5e3372c81609b68db7f
web
-
github.com
/surrealdb/surrealdb/security/advisories/GHSA-pm86-cc75-q463
vendor-advisory, exploit
-
vulncheck.com
/advisories/surrealdb-before-3.3.0-use-after-free-via-affinitypool-spawn-local-in-kv-backends
third-party-advisory
-
crates.io
/crates/surrealdb
package
-
rustsec.org
/advisories/RUSTSEC-2026-0453.html
advisory
Sources
- CVE List CVE-2026-121417
- NVD CVE-2026-121417
- OSV RUSTSEC-2026-0453
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.