Security readout for executives and security teams
Plain-English summary
A WordPress EmbedPress flaw can let a logged-in contributor place script into embedded content. That script runs when someone views the affected page, creating account, content-integrity, and visitor-trust risk. It is not listed as KEV, and the bundle does not show active exploitation.
Executive priority
Treat this as a moderate, role-dependent web risk. Prioritize shared, customer-facing, or multi-author WordPress sites first. Single-admin sites without EmbedPress are unlikely to be exposed based on the provided evidence.
Technical view
CVE-2023-6986 is stored XSS in EmbedPress via the embed_oembed_html shortcode. The source attributes it to insufficient input sanitization and output escaping of user-supplied attributes. Exploitation requires authenticated contributor-level or higher permissions. CVSS 3.1 score is 6.4 with low complexity, low privileges, scope changed, and limited confidentiality/integrity impact.
Likely exposure
Exposure is limited to WordPress sites using the EmbedPress plugin in the affected version range and allowing contributor-level or higher users to create content. Public visitor interaction is not required for injection, but impact occurs when users view injected pages.
Exploitation context
The source bundle does not cite active exploitation and KEV is false. The vulnerability is practical in multi-author WordPress environments because contributor access is enough to persist script in page content. Evidence does not support claims of unauthenticated exploitation.
Researcher notes
The bundle contains conflicting version language: the title says <= 3.9.5, while the description says up to 3.9.5 exclusive. Use the Wordfence advisory and WordPress.org changeset to confirm the fixed boundary before closing exposure.
Mitigation direction
- Inventory WordPress sites for the EmbedPress plugin and installed version.
- Update EmbedPress according to WordPress.org or vendor guidance for this CVE.
- Resolve the source version-boundary inconsistency before treating 3.9.5 as safe.
- Restrict contributor-level publishing rights on sites using EmbedPress.
- Review recent contributor-authored embeds and shortcode-based content for unexpected scripts.
Validation and detection
- Confirm whether EmbedPress is installed on each WordPress site.
- Compare installed versions against the CVE and vendor advisory wording.
- Review users with contributor-level or higher permissions.
- Check content using embed_oembed_html shortcodes for suspicious attributes.
- Verify updated plugin code includes sanitization and escaping changes.
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-2023-6986 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ceae0115-268c-401b-876b-3477d10c10e6?source=cveCVE reference
- https://plugins.svn.wordpress.org/embedpress/trunk/EmbedPress/Shortcode.phpCVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3014595%40embedpress&new=3014595%40embedpress&sfp_email=&sfph_mail=#file11CVE reference
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.