Security readout for executives and security teams
Plain-English summary
CVE-2026-0815 is a stored cross-site scripting issue in the WordPress Category Image plugin. A logged-in user with Editor-level privileges or higher could store script content through the tag-image parameter, causing it to run when others view the affected page. This is not listed as actively exploited in the provided sources.
Executive priority
Treat as a targeted hygiene issue, not an emergency, unless many editors are untrusted or the plugin is widely deployed. Prioritize inventory, role review, and vendor remediation checks during the next WordPress maintenance cycle.
Technical view
The vulnerability is CWE-79 in Category Image versions up to and including 2.0. The issue is insufficient input sanitization and output escaping of the tag-image parameter. CVSS 3.1 is 4.4, reflecting network reachability but high privileges, high complexity, scope change, and limited confidentiality and integrity impact.
Likely exposure
Exposure is limited to WordPress sites running the Category Image plugin at version 2.0 or earlier, where untrusted or less-trusted users have Editor or higher roles. Sites without the plugin, or without such users, have materially lower exposure.
Exploitation context
The provided sources do not show KEV listing or active exploitation. Exploitation requires authenticated Editor-level access or higher. Impact would likely involve script execution in another user’s browser when viewing an injected page, which can affect trust, session safety, and content integrity.
Researcher notes
The source data states all versions up to and including 2.0 are affected, but the affected-version metadata appears sparse. No exploit code, patch version, or exploitation-in-the-wild evidence is provided in the bundle. Validate against Wordfence and WordPress plugin repository data before closing remediation.
Mitigation direction
- Identify WordPress sites using the Category Image plugin.
- Check whether installed plugin versions are 2.0 or earlier.
- Review vendor or WordPress plugin guidance for an updated fixed version or official remediation.
- Restrict Editor and higher roles to trusted users only.
- Remove or disable the plugin if it is unnecessary and no fix is available.
Validation and detection
- Inventory WordPress plugins across managed sites.
- Confirm Category Image version from WordPress admin or asset management records.
- Review user role assignments for Editor, Administrator, and equivalent privileged accounts.
- Check plugin changelog or vendor advisory for remediation status.
- Inspect affected content for unexpected scripts if suspicious privileged activity occurred.
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-2026-0815 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
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/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:H/PR:H/UI:N/S:C/C:L/I:L/A:N1.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/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/fb28c526-67ae-441d-9964-5ac17b966687?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/category-image/tags/2.0/category-image.php#L28CVE reference
- https://plugins.trac.wordpress.org/browser/category-image/trunk/category-image.php#L28CVE 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.