CVE-2026-63748

SurrealDB versions before 3.1.0 contain an information disclosure vulnerability where authenticated users with UPDATE access can read field values hidden by field-level SELECT permissions through error messages. Attackers can trigger arithmetic or extend operations on hidden fields to embed raw operand values in error responses, bypassing field-level access controls.

SurrealDB versions before 3.1.0 contain an information disclosure vulnerability where authenticated users with UPDATE access can read field values hidden by field-level SELECT permissions through error messages. Attackers can trigger arithmetic or extend operations on hidden fields to embed raw operand values in error responses, bypassing field-level access controls.

A record user with UPDATE access could read field values that field-level SELECT permissions hid from them. Arithmetic operators and extend embedded the raw operand into their error messages, and UPDATE permission checks evaluate against the unreduced document — so triggering such an error against a hidden field returned its value in the resulting error.

Impact

A record user issues an UPDATE that performs an incompatible operation against a hidden field — e.g. UPDATE person:me SET probe = email + 1 when email is a string — and reads the value from the returned error (Tried to compute "[email protected]" + 1 …). One field per operation, but the attacker can repeat against any field on any record they can UPDATE.

Patches

A patch has been introduced that replaces the raw operand in every try_* operator and in extend with the operand's type name ("string", "int", "array", etc.).

• Versions 3.1.0 and later are not affected by this issue.

Workarounds

Affected users who are unable to update should not grant UPDATE permission on records whose field-level SELECT permissions are expected to hide values from the same caller.

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-6g9v-7gq3-p2c6. This link is maintained to preserve external references.

Original Description

SurrealDB versions before 3.1.0 contain an information disclosure vulnerability where authenticated users with UPDATE access can read field values hidden by field-level SELECT permissions through error messages. Attackers can trigger arithmetic or extend operations on hidden fields to embed raw operand values in error responses, bypassing field-level access controls.

SurrealDB versions before 3.1.0 contain an information disclosure vulnerability where authenticated users with UPDATE access can read field values hidden by field-level SELECT permissions through error messages. Attackers can trigger arithmetic or extend operations on hidden fields to embed raw operand values in error responses, bypassing field-level access controls.

SurrealDB versions before 3.1.0 contain an information disclosure vulnerability where authenticated users with UPDATE access can read field values hidden by field-level SELECT permissions through error messages. Attackers can trigger arithmetic or extend operations on hidden fields to embed raw operand values in error responses, bypassing field-level access controls.

A record user with UPDATE access could read field values that field-level SELECT permissions hid from them. Arithmetic operators and extend embedded the raw operand into their error messages, and UPDATE permission checks evaluate against the unreduced document — so triggering such an error against a hidden field returned its value in the resulting error.

Impact

A record user issues an UPDATE that performs an incompatible operation against a hidden field — e.g. UPDATE person:me SET probe = email + 1 when email is a string — and reads the value from the returned error (Tried to compute "[email protected]" + 1 …). One field per operation, but the attacker can repeat against any field on any record they can UPDATE.

Patches

A patch has been introduced that replaces the raw operand in every try_* operator and in extend with the operand's type name ("string", "int", "array", etc.).

• Versions 3.1.0 and later are not affected by this issue.

Workarounds

Affected users who are unable to update should not grant UPDATE permission on records whose field-level SELECT permissions are expected to hide values from the same caller.

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-6g9v-7gq3-p2c6. This link is maintained to preserve external references.

Original Description

SurrealDB versions before 3.1.0 contain an information disclosure vulnerability where authenticated users with UPDATE access can read field values hidden by field-level SELECT permissions through error messages. Attackers can trigger arithmetic or extend operations on hidden fields to embed raw operand values in error responses, bypassing field-level access controls.