Security readout for executives and security teams
Plain-English summary
CVE-2018-25247 affects MyBB Like Plugin 3.0.0. A forum post or thread subject can be stored and later run as script when another user views the attacker’s profile. Business impact is mainly account/session exposure, user impersonation risk, and reputational damage on affected forums.
Executive priority
Treat as a targeted web application risk, not an emergency. Prioritize if your organization operates public MyBB forums, especially where user accounts, staff sessions, or brand trust matter.
Technical view
This is stored cross-site scripting (CWE-79) in MyBB Like Plugin 3.0.0. The issue is tied to unvalidated subject content displayed in profile liked-post listings without proper sanitization. CVSS 3.1 is 6.1: network-accessible, low complexity, no privileges, user interaction required, changed scope, low confidentiality and integrity impact.
Likely exposure
Exposure is limited to sites running MyBB with the Like Plugin version 3.0.0 installed and profile pages showing liked posts. Internet-facing community forums are the most relevant targets.
Exploitation context
A public ExploitDB reference exists, but the source bundle does not show CISA KEV listing or confirmed active exploitation. Exploitation requires another user to view a profile where affected liked-post content is rendered.
Researcher notes
The available sources identify MyBB Like Plugin 3.0.0 only. No patch version or vendor security advisory is included in the provided bundle. Avoid assuming broader MyBB core impact without separate evidence.
Mitigation direction
- Inventory MyBB forums for the Like Plugin and confirm installed version.
- If version 3.0.0 is present, check vendor or maintainer guidance for fixed releases.
- Disable or remove the plugin if no supported fix is available.
- Restrict untrusted HTML/script rendering in post and thread subjects where administratively possible.
- Review forum moderation and content filtering controls for stored XSS prevention.
Validation and detection
- Confirm whether the Like Plugin is installed on each MyBB instance.
- Check plugin version and compare against the affected 3.0.0 version.
- Review profile liked-post rendering for unsafe subject output in a controlled test environment.
- Search forum content and moderation queues for suspicious script-like subject text.
- Verify remediation by confirming subjects render as text, not executable script.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2018-25247 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- ExploitDB-45179CVE reference · exploit
- Product ReferenceCVE reference · product
- VulnCheck Advisory: MyBB Like Plugin 3.0.0 Cross-Site Scripting via User ProfilesCVE reference · third-party-advisory
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.