Security readout for executives and security teams
Plain-English summary
This is a reflected cross-site scripting issue in several KlbTheme WordPress core plugins. An attacker could trick a user into opening a crafted link that causes script to run in that user's browser. Risk is highest for public WordPress sites using the affected theme core plugins, especially commerce sites with logged-in administrators or customers.
Executive priority
Treat as high priority for exposed WordPress commerce or marketing sites using these KlbTheme plugins. It is not confirmed as actively exploited in the bundle, but no-auth, low-complexity XSS can still support account abuse, brand damage, and customer trust impact after user interaction.
Technical view
CVE-2023-49839 is CWE-79 reflected XSS affecting Cosmetsy, Partdo, Bacola, Medibazar, Furnob, and Clotya core plugins through the listed versions. CVSS 3.1 is 7.1, network exploitable, low complexity, no privileges required, user interaction required, and changed scope. The bundle does not identify affected parameters, endpoints, or fixed versions.
Likely exposure
Exposure is limited to WordPress installations running the named KlbTheme core plugins at or below Cosmetsy 1.3.0, Partdo 1.0.9, Bacola 1.3.3, Medibazar 1.2.3, Furnob 1.1.7, or Clotya 1.1.5. Public sites and admin-facing workflows increase business impact.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Exploitation requires user interaction, typically opening attacker-controlled content. Because this is reflected XSS on public WordPress components, phishing and social engineering are plausible, but weaponization details are not provided in the cited sources.
Researcher notes
Evidence supports reflected XSS, CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L, and CWE-79. The bundle provides product/version ranges but not vulnerable parameters, endpoints, proof-of-concept status, or fixed releases. Avoid assuming exploitation or remediation beyond vendor/Patchstack guidance.
Mitigation direction
- Inventory WordPress sites for the six named KlbTheme core plugins.
- Compare installed versions against the affected version ceilings listed in the CVE.
- Check KlbTheme, WordPress admin updates, and Patchstack guidance for fixed versions or vendor remediation.
- Update, disable, or replace affected plugins according to vendor guidance.
- Prioritize admin and commerce sites where user sessions have sensitive privileges.
Validation and detection
- Confirm whether each WordPress site uses any affected KlbTheme core plugin.
- Record installed plugin versions and compare them with the CVE affected ranges.
- Review vendor or Patchstack advisories for remediation status before closing the finding.
- Use safe, non-executing test markers in staging to confirm input is encoded.
- Review web logs for suspicious crafted links targeting affected plugin pages.
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-2023-49839 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
- High
- CVSS
- 7.1 (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:L
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:L2.83.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://patchstack.com/database/vulnerability/partdo-core/wordpress-partdo-core-plugin-1-0-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference · vdb-entry
- https://patchstack.com/database/vulnerability/bacola-core/wordpress-bacola-core-plugin-1-3-3-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference · vdb-entry
- https://patchstack.com/database/vulnerability/medibazar-core/wordpress-medibazar-core-plugin-1-2-3-reflected-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference · vdb-entry
- https://patchstack.com/database/vulnerability/furnob-core/wordpress-furnob-core-plugin-1-1-7-reflected-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference · vdb-entry
- https://patchstack.com/database/vulnerability/cosmetsy-core/wordpress-cosmetsy-core-plugin-1-3-0-reflected-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference · vdb-entry
- https://patchstack.com/database/vulnerability/clotya-core/wordpress-clotya-core-plugin-1-1-5-reflected-cross-site-scripting-xss-vulnerability?_s_id=cveCVE reference · vdb-entry
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.