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TI-2026-77940 Aliases CVE-2026-101633GHSA-gmr7-2hvr-9v3x

Oracle MySQL Router improper access control allows unauthorized reads

Priority LOW 20CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Oracle MySQL Router, Router: General component, has an improper access control flaw (CWE-284). A low-privileged attacker with network access via HTTPS can compromise MySQL Router and gain unauthorized read access to a subset of its accessible data. The CVSS 3.1 base score is 4.3 (MEDIUM), with impact limited to confidentiality.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Vulnerability in the MySQL Router product of Oracle MySQL (component: Router: General). The supported version that is affected is 26.7.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTPS to compromise MySQL Router. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Router accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00301 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OracleMySQL Router26.7.0—No fix listedCNA
  • MySQL Router VendorOracle Affected 26.7.0 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:oracle:mysql_router:*:*:*:*:*:*:*:*——Oracle
  • cpe:2.3:a:oracle:mysql_router:*:*:*:*:*:*:*:* Versions — — ·Oracle

Remediation

The sources list no fixed version for the affected MySQL Router version 26.7.0. Check Oracle's advisory for a later update that addresses this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Oracle MySQL Router — oracle.com/security-alerts/cpuoct2026.html

    5 records Highest priority Priority LOW 5 LOW

    Other records, highest priority first

    • TI-2026-78110 Denial of service in Oracle MySQL Router by network attackersPriority LOW 39
    • TI-2026-78083 Improper access control in Oracle MySQL RouterPriority LOW 34
    • TI-2026-77938 Improper access control in Oracle MySQL Router lets attackers modify dataPriority LOW 32
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-101633
  2. 2026-10-21 Alias added: GHSA-gmr7-2hvr-9v3x
  3. 2026-10-21 Weakness changed · CISA ADP
  4. 2026-10-21 CISA SSVC decision points changed

References

Advisory 1

  • TI-2026-34425 Improper privilege management in Oracle Payments KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-27421 Missing authentication in Oracle PeopleSoft Enterprise PeopleTools KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-17661 Improper access control in Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in KEVCVSS 3.1CRITICAL 10.0
  • TI-2025-38252 Improper authentication in Oracle Concurrent Processing KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-38151 Missing authentication in Oracle Identity Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-07142 Code injection in Spring Framework KEVCVSS 3.1CRITICAL 9.8
See all 14200 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences