Security readout for executives and security teams
Plain-English summary
This affects WordPress sites running MyThemeShop Launcher: Coming Soon & Maintenance Mode through version 1.0.11. An already-authenticated administrator could store script content that later runs in a user's browser. Risk is limited by the admin-level requirement, but it matters on multi-admin sites or where admin accounts may be compromised.
Executive priority
Treat as a moderate-priority WordPress hygiene issue. It is not described as remotely exploitable without credentials, but affected plugin versions should be removed or updated because stored XSS can become serious after admin account compromise.
Technical view
CVE-2021-36829 is a CWE-79 authenticated stored XSS issue in the Launcher WordPress plugin <= 1.0.11. CVSS 3.1 is 4.8 with network access, low complexity, high privileges required, user interaction required, changed scope, and low confidentiality and integrity impact. Sources do not provide exploit mechanics or a specific vulnerable field.
Likely exposure
Exposure is limited to WordPress installations using the MyThemeShop Launcher plugin at version 1.0.11 or earlier. Sites without this plugin are not affected by the cited sources.
Exploitation context
The source bundle does not indicate active exploitation, and CISA KEV status is false. Exploitation requires an authenticated administrator-level user plus user interaction, so practical risk is highest where admin accounts are shared, weakly protected, or already compromised.
Researcher notes
Evidence is sparse. The bundle identifies affected product, version boundary, CWE, CVSS vector, and references, but not the vulnerable parameter, fixed version, or exploit status. Avoid assuming public exploitation or a specific remediation beyond vendor and WordPress guidance.
Mitigation direction
- Inventory WordPress sites for the Launcher plugin and installed version.
- Update, disable, or remove affected plugin versions according to vendor or WordPress guidance.
- Restrict WordPress administrator access to trusted, MFA-protected accounts.
- Review administrator accounts for unnecessary privileges or stale access.
- Check vendor and WordPress plugin pages for current fixed-version guidance.
Validation and detection
- Confirm whether Launcher: Coming Soon & Maintenance Mode is installed.
- Verify the plugin version is greater than 1.0.11, or the plugin is removed.
- Review WordPress administrator users for unexpected or inactive accounts.
- Inspect recent plugin settings/content changes for suspicious script-like entries.
- Confirm no cited source reports active exploitation for this CVE.
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-2021-36829 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
- 4.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:H/UI:R/S:C/C:L/I:L/A:N1.72.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.8MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/vulnerability/launcher/wordpress-launcher-coming-soon-maintenance-mode-plugin-1-0-11-authenticated-stored-cross-site-scripting-xss-vulnerabilityCVE reference · x_refsource_CONFIRM
- https://wordpress.org/plugins/launcher/CVE reference · x_refsource_CONFIRM
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.