CVE-2026-63760 json
SurrealDB before 3.1.0 Denial of Service via JSON Parser
published 4mo ago modified 2mo ago also GHSA-q729-696q-g9pq , EUVD-2026-45931
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
SurrealDB before 3.1.0 fails to enforce the configured recursion depth limit in the value and JSON parser when processing nested braces, brackets, or parentheses. Unauthenticated attackers can send deeply nested JSON payloads to the WebSocket /rpc endpoint to exhaust server memory and crash the process.
Patch / fix
Is CVE-2026-63760 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
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/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 |
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | surrealdb | <3.1.0 |
3.1.0 |
Affected products
- surrealdb surrealdb
Classification
- Weakness
-
- CWE-674 Uncontrolled Recursion
References
-
github.com
/surrealdb/surrealdb/commit/1bd9826f477f4089134460dc5574b6f4e6916973
web
-
github.com
/surrealdb/surrealdb/security/advisories/GHSA-q729-696q-g9pq
vendor-advisory, web, mitigation
-
vulncheck.com
/advisories/surrealdb-before-denial-of-service-via-json-parser
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-63760
advisory
-
github.com
/surrealdb/surrealdb
package
Sources
- CVE List CVE-2026-63760
- GitHub Advisory GHSA-q729-696q-g9pq
- NVD CVE-2026-63760
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.