Security readout for executives and security teams
Plain-English summary
CVE-2026-1097 affects the ThemeRuby Multi Authors WordPress plugin through version 1.0.0. A logged-in user with Contributor-level access or higher could store malicious script in shortcode attributes. That script may run when someone views the affected page, creating risk of account misuse, content tampering, or visitor impact.
Executive priority
Treat as a moderate-priority WordPress application risk. It requires an authenticated content user, but many sites allow contributor workflows. Prioritize sites with multiple authors, public registration, agencies, contractors, or weak account governance.
Technical view
The issue is stored cross-site scripting in the 'before' and 'after' shortcode attributes due to insufficient input sanitization and output escaping. It is classified as CWE-79 with CVSS 3.1 score 6.4. Exploitation requires authenticated Contributor-level privileges or higher and affects vulnerable WordPress plugin installations up to and including 1.0.0.
Likely exposure
Exposure is limited to WordPress sites using ThemeRuby Multi Authors – Assign Multiple Writers to Posts at version 1.0.0 or earlier, especially where Contributor, Author, Editor, or Administrator accounts are broadly assigned or not tightly controlled.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The attacker must already have a valid Contributor-level or higher WordPress account. The payload is stored and executes when a user accesses an injected page.
Researcher notes
Evidence supports authenticated stored XSS via shortcode attributes in versions through 1.0.0. The referenced WordPress Trac files and changeset should be reviewed to confirm code-level remediation. Do not assume exploitation in the wild without additional reporting.
Mitigation direction
- Identify WordPress sites using the ThemeRuby Multi Authors plugin.
- Check whether installed versions are 1.0.0 or earlier.
- Review vendor or WordPress plugin repository guidance for an updated fixed release.
- Restrict Contributor-level and higher access to trusted users only.
- Remove or disable the plugin if no safe update is available.
Validation and detection
- Inventory plugin versions across all WordPress environments.
- Review posts and pages using the affected shortcode attributes.
- Look for unexpected scripts in 'before' and 'after' shortcode values.
- Confirm whether plugin code includes the referenced repository changeset.
- Monitor Wordfence or vendor advisories for updated remediation details.
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-2026-1097 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/ca74bb1d-1954-4869-aaa9-bf66600cdf2a?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/themeruby-multi-authors/trunk/includes/class-tma-shortcodes.php#L76CVE reference
- https://plugins.trac.wordpress.org/browser/themeruby-multi-authors/tags/1.0.0/includes/class-tma-shortcodes.php#L76CVE reference
- https://plugins.trac.wordpress.org/changeset/3446398/CVE 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.