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CVE-2026-63761— SurrealDB before 3.1.0 Algorithm Downgrade via ES512

CVSS 4.3 · Medium

Affected Version Matrix 2

VendorProductVersion RangeStatus
surrealdbsurrealdb< 3.1.0affected
3.1.0unaffected
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I. Basic Information for CVE-2026-63761

Vulnerability Information
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Vulnerability Title
SurrealDB before 3.1.0 Algorithm Downgrade via ES512
Source: NVD (National Vulnerability Database)
Vulnerability Description
SurrealDB before 3.1.0 silently substitutes the ES384 algorithm when a JWT access method is configured with ALGORITHM ES512 (DEFINE ACCESS ... TYPE JWT ALGORITHM ES512), because the underlying jsonwebtoken crate (v10.x) has no ES512 variant and the mapping defaults to ES384 without any error, warning, or log message. Users who supply the correct P-521 key for ES512 experience authentication handshake failures due to the curve mismatch with ES384 (which expects P-384), and tokens are rejected by external systems expecting genuine ES512 signatures. The flaw cannot be used to forge tokens or compromise data confidentiality or integrity, as ES384 remains cryptographically strong.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用已被攻破或存在风险的密码学算法
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
surrealdbsurrealdb 0 ~ 3.1.0 -

II. Public POCs for CVE-2026-63761

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III. Intelligence Information for CVE-2026-63761

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Vendor Advisories for CVE-2026-63761 (2)

Same Patch Batch · surrealdb · 2026-07-20 · 31 CVEs total

CVE-2026-637578.8 HIGHSurrealDB before 3.1.0 Session Hijacking via /rpc sessions
CVE-2026-637358.1 HIGHSurrealDB before 3.2.0 Authentication Bypass via Custom API
CVE-2026-637568.1 HIGHSurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition
CVE-2026-637397.7 HIGHSurrealDB before 3.1.5 Arbitrary File Read via DEFINE ANALYZER
CVE-2026-637607.5 HIGHSurrealDB before 3.1.0 Denial of Service via JSON Parser
CVE-2026-637477.5 HIGHSurrealDB before 3.1.0 Denial of Service via malformed RPC use
CVE-2026-637376.5 MEDIUMSurrealDB before 3.1.5 Denial of Service via deep operator chains
CVE-2026-637406.5 MEDIUMSurrealDB before 3.1.4 Array Element Permission Bypass
CVE-2026-637596.5 MEDIUMSurrealDB before 3.1.0 Denial of Service nested type annotations
CVE-2026-637546.5 MEDIUMSurrealDB before 3.1.0 Denial of Service via LIVE Query
CVE-2026-637556.5 MEDIUMSurrealDB before 3.1.0 Permission Bypass via WHERE Clause
CVE-2026-637416.5 MEDIUMSurrealDB before 3.1.0 Authentication Bypass via USE statement
CVE-2026-637466.5 MEDIUMSurrealDB before 3.1.0 Permission Bypass via Graph Traversal
CVE-2026-637436.4 MEDIUMSurrealDB before 3.1.0 Port-Specific Deny Rule Bypass via HTTP Redirect
CVE-2026-637455.4 MEDIUMSurrealDB before 3.1.0 Authorization Bypass via Composite Record-id
CVE-2026-637585.4 MEDIUMSurrealDB before 3.1.0 Authorization Bypass via KILL Statement
CVE-2026-637505.3 MEDIUMSurrealDB before 3.1.0 Memory Amplification via /sql WebSocket
CVE-2026-637344.9 MEDIUMSurrealDB before 3.2.0 Denial of Service via malformed SurrealML import
CVE-2026-637424.3 MEDIUMSurrealDB before 3.1.0 Field Permission Bypass via Indexed COUNT
CVE-2026-637524.3 MEDIUMSurrealDB before 3.1.0 RELATE Statement Record Overwrite

Showing top 20 of 31 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: surrealdb
Same vendor: surrealdb
Same weakness: CWE-327

V. Comments for CVE-2026-63761

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