NVD / CVE Program· CNA VulnCheck

CVE-2026-63757: SurrealDB before 3.1.0 Session Hijacking via /rpc sessions

Noroxi assessment

Priority: Monitor (action score 34/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.53% (FIRST EPSS).
Anyone who can reach it over the internet can trigger it. No account or password is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: surrealdb surrealdb 3.1.0.

Low priority for now. Upgrade to surrealdb surrealdb 3.1.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

SurrealDB versions before 3.1.0 contain a session hijacking vulnerability where the HTTP /rpc sessions method returns attached session UUIDs without authentication and accepts arbitrary session fields with no ownership verification. Unauthenticated attackers can enumerate session UUIDs and impersonate authenticated sessions to read, write, delete data and escalate privileges.

HighCVSS 8.7 · v4.0—No exploit Fix available

Published: Jul 20, 2026
Updated: Jul 28, 2026
EPSS: 0.5% · 44th percentile
CWE: CWE-306

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 34 / 40 · 8.7 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.5%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · VulnCheck: 8.7; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
surrealdb	surrealdb	cpe:2.3:a:surrealdb:surrealdb

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

surrealdb surrealdbbefore 3.1.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (VulnCheck). Independent of NVD's CPE analysis and usually ahead of it.

surrealdb surrealdb
- 3.1.0not affected
- before 3.1.0affected · semver

Same product

surrealdb: all records

Other highest-scoring records for the same primary product.

CVE-2025-71392SurrealDB before 2.2.2 SurrealQL Injection via export
37Monitor
CVE-2026-63756SurrealDB before 3.1.0 Privilege Escalation via RPC Session Race Condition
36Monitor
CVE-2024-58366SurrealDB before 1.1.1 Format String via Scripting Functions
36Monitor

Published before and after this one in the same product

← EarlierCVE-2026-63754Jul 20, 2026 · SurrealDB before 3.1.0 Denial of Service via LIVE Query
28Monitor
← EarlierCVE-2026-63755Jul 20, 2026 · SurrealDB before 3.1.0 Permission Bypass via WHERE Clause
28Monitor
Later →CVE-2026-63758Jul 20, 2026 · SurrealDB before 3.1.0 Authorization Bypass via KILL Statement
21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
surrealdb surrealdb	3.1.0	Vendor (CNA)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

addcontentreporter

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-10934284 days apartSurrealDB 3.0.0 before 3.3.0 Missing Authentication in revoke RPC Method
21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

CVE-2026-637390 days apartSurrealDB before 3.1.5 Arbitrary File Read via DEFINE ANALYZER
33Monitor
CVE-2026-637430 days apartSurrealDB before 3.1.0 Port-Specific Deny Rule Bypass via HTTP Redirect
21Monitor
CVE-2026-637360 days apartSurrealDB before 3.2.0 SSRF via JWKS URL hostname resolution
20Monitor
CVE-2026-637440 days apartSurrealDB before 3.1.5 SSRF via JWKS URL Redirect
20Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: P
Scope: X

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/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

nvd-secondary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1// Added for the support team
2app.post("/maintenance/reset", resetDevice);

Fixed

1if (config.maintenanceEnabled) {
2  app.post(
3    "/maintenance/reset",
4    requireSession, requireRole("admin"), resetDevice
5  );
6}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log

Fix✗ → ✓Sep 28, 2026, 10:11 PM UTC

For records you follow, these changes also arrive as notifications. →

References

github.com/surrealdb/surrealdb/security/advisories/GHSA-5qfp-32cf-69jh

Show all references (1 more)

www.vulncheck.com/advisories/surrealdb-before-session-hijacking-via-rpc-sessions

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records