CVE-2026-102876

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-29. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

SurrealDB before 3.3.0 contains an authorization bypass in HTTP session construction where check_auth() verifies credentials against Surreal-Auth-NS and Surreal-Auth-DB headers but constructs sessions using Surreal-NS and Surreal-DB headers without validating access permissions. Attackers can authenticate as a user from one tenant while selecting another tenant's namespace and database to read, create, and modify records across tenant boundaries.

CVSS v3
8.1
EG Score
8.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
17th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 29, 2026

Last Modified

October 2, 2026

Advisory Details (6)

Auto-updated Sep 29, 2026
Patch available. Sources: github, github_commit, github_release.
generic

SurrealDB before 3.3.0 Cross-Tenant Access via Headers | Advisories | VulnCheck

https://www.vulncheck.com/advisories/surrealdb-before-3.3.0-cross-tenant-access-via-headers
generic

GitHub - surrealdb/surrealdb: A scalable, distributed, collaborative, document-graph database, for the realtime web · GitHub

https://github.com/surrealdb/surrealdb
github_release Patch Available

Release 3.3.0

Patch available: surrealdb/surrealdb v3.3.0

https://github.com/surrealdb/surrealdb/releases/tag/v3.3.0
generic

surrealdb/surrealdb/server/src/ntw/auth.rs at v3.2.4 · surrealdb/surrealdb · GitHub

https://github.com/surrealdb/surrealdb/blob/v3.2.4/surrealdb/server/src/ntw/auth.rs
github_commit

commit 5000e233b4a8 (surrealdb/surrealdb)

Fix landed in surrealdb/surrealdb commit 5000e233b4a8 — awaiting tagged release

https://github.com/surrealdb/surrealdb/commit/5000e233b4a8b96689c82715c172061dcf711d31
github Patch Available

Cross-tenant access through the Surreal-NS / Surreal-DB headers with Basic authentication · Advisory · surrealdb/surrealdb · GitHub

Affected: 3.3.0:

https://github.com/surrealdb/surrealdb/security/advisories/GHSA-vx2p-7hhm-wv62

Vendor Advisories for CVE-2026-102876(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 11:38 UTCGHSA enrichment
  2. 2026-10-04 00:04 UTCEG score recompute
  3. 2026-10-04 00:04 UTCGHSA enrichment
  4. 2026-10-03 14:25 UTCEPSS rescore
  5. 2026-10-03 12:27 UTCGHSA enrichment
  6. 2026-10-03 00:53 UTCEG score recompute
  7. 2026-10-03 00:53 UTCGHSA enrichment
  8. 2026-10-02 13:18 UTCEG score recompute
  9. 2026-10-02 13:18 UTCGHSA enrichment
  10. 2026-10-02 12:46 UTCEG score recompute
  11. 2026-10-02 12:46 UTCGHSA enrichment
  12. 2026-10-02 06:19 UTCEG score recompute
  13. 2026-10-02 06:19 UTCGHSA enrichment
  14. 2026-10-01 19:49 UTCEPSS rescore
  15. 2026-10-01 18:45 UTCGHSA enrichment
  16. 2026-10-01 07:05 UTCGHSA enrichment
  17. 2026-09-30 19:31 UTCEG score recompute
  18. 2026-09-30 19:31 UTCGHSA enrichment
  19. 2026-09-30 15:02 UTCEPSS rescore
  20. 2026-09-30 07:57 UTCEG score recompute
  21. 2026-09-30 07:57 UTCGHSA enrichment
  22. 2026-09-29 20:22 UTCEG score recompute
  23. 2026-09-29 20:03 UTCEG score recompute
  24. 2026-09-29 20:03 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-102876?
CVE-2026-102876 is a high vulnerability published on September 29, 2026. SurrealDB before 3.3.0 contains an authorization bypass in HTTP session construction where check_auth() verifies credentials against Surreal-Auth-NS and Surreal-Auth-DB headers but constructs sessions using Surreal-NS and Surreal-DB headers without validating access permissions. Attackers can…
When was CVE-2026-102876 disclosed?
CVE-2026-102876 was first published on September 29, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-102876 actively exploited?
CVE-2026-102876 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (17th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-102876?
CVE-2026-102876 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-102876?
A fix for CVE-2026-102876 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-102876 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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