CVE-2018-18903

Vanilla 2.6.x before 2.6.4 allows remote code execution.

9.8 Critical

CVE-2018-18903 is a critical vulnerability (CVSS 9.8) in Vanillaforums Vanilla, published November 3, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.15%, the 92nd percentile. No source names a fixed version.

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

5.15%Up 3.3 points since Apr 14, 2021

What each source reports

NVD Score used 9.8

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Record: CVE-2018-18903
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-94
Updated: 2026-11-02

CVE List No score

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Record: CVE-2018-18903
Updated: 2026-11-02

EUVDEUVD-2018-10613 No score

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Record: EUVD-2018-10613
Updated: 2026-11-03

GitHub AdvisoriesGHSA-jm3v-m7pq-rwrh 9.8

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Record: GHSA-jm3v-m7pq-rwrh
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-94
Updated: 2026-11-02

OSV 9.8

Vanilla 2.6.x before 2.6.4 allows remote code execution.

Record: CVE-2018-18903
CVSS 3.0: 9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Affected products

vanillaforums vanilla

History

History
When	Changed	Sources
2026-11-03	aliases	EUVD
2026-11-02	created	CVE List, GitHub Advisories, NVD, OSV

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

History

References