CVE-2015-8974

CRITICAL

SQL injection vulnerability in the Group Promotions module in the admin control panel in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 allows re...

Affects 2 products across 1 vendor.

CVSS 3.010.0
EPSS2.1%
Percentile82th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, can impact systems beyond the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.
CWE Weakness Definitions
CWE-89: SQL Injection

Attacker inserts SQL commands into application queries through user-controlled input, allowing unauthorized database access.

Related Attack Patterns (CAPEC)
CAPEC-7 Blind SQL Injection
via CWE-89
CAPEC-108 Command Line Execution through SQL Injection
via CWE-89
CAPEC-109 Object Relational Mapping Injection
via CWE-89
CAPEC-110 SQL Injection through SOAP Parameter Tampering
via CWE-89
CAPEC-470 Expanding Control over the Operating System from the Database
via CWE-89
Show all 6
via CWE-89

Mapping is CWE-to-CAPEC per MITRE CAPEC 3.9.

◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2017. A critical vulnerability affects Mybb systems (CVE-2015-8974). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2017-GLOBAL-107212-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2015-8974?
This vulnerability was disclosed in 2017. A critical vulnerability affects Mybb systems (CVE-2015-8974). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2015-8974?
CVE-2015-8974 has CVSS 10.0 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. EPSS: 2.1%.
Is CVE-2015-8974 actively exploited?
No confirmed active exploitation of CVE-2015-8974 as of 2026-09-25.
How do I remediate CVE-2015-8974?
Priority: MEDIUM. Advisory: https://blog.mybb.com/2015/09/07/mybb-1-8-6-1-6-18-merge-system-1-8-6-release/ PSIRT: [email protected]
What systems are affected by CVE-2015-8974?
CVE-2015-8974 affects Mybb Mybb, Merge System.
Vulnerability Details
CVE IDCVE-2015-8974
BSIDBS-2017-GLOBAL-107212-C BreachSpider Global ID
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published2017-01-31
Last Modified2026-06-17
ICS Relevance0%
Weakness (CWE)
SQL Injection
SourceNVD
Official Description

SQL injection vulnerability in the Group Promotions module in the admin control panel in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: SQL injection vulnerability in the Group Promotions module in the admin control panel in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 allows remote attackers to execute arbitrary SQL commands via unspecified vectors. CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Mybb Mybb 1.8.0 1.8.1 1.8.2 1.8.3 1.8.4 1.8.5
+1 more≤ 1.6.17
Mybb Merge System ≤ 1.8.5
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 3544 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash0e5bb6921adfe9d8f474744d84ed7484d641d6909d02e723a95c2c7f40acca9af973b7d021ec7282ca6ef5a6fb490e1ce68313ae863a9865abc1efdab2297f01
Related CVEs affecting Mybb
CVE-2015-2786 10.0 Unspecified vulnerability in MyBB (aka MyBulletinBoard) before 1.8.4 has unkn... CVE-2011-5133 10.0 Unspecified vulnerability in MyBB before 1.6.5 has unknown impact and attack ... CVE-2006-0218 10.0 Multiple unspecified vulnerabilities in MyBulletinBoard (MyBB) before 1.0.2 h... CVE-2016-9402 9.8 SQL injection vulnerability in the moderation tool in MyBB (aka MyBulletinBoa... CVE-2016-9403 9.8 newreply.php in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System...
View all Mybb CVEs →

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