Security readout for executives and security teams
Plain-English summary
A WordPress plugin used to manage HTTP headers can store malicious script content when controlled by an authenticated administrator. The business risk is mainly from compromised or malicious admin accounts, because successful abuse could affect site visitors or privileged users who view the stored content.
Executive priority
Prioritize this as a moderate WordPress hygiene issue. It is not shown as actively exploited, but affected public sites with weak admin governance should be remediated promptly to reduce the impact of account compromise.
Technical view
CVE-2023-37874 is a stored XSS issue in Dimitar Ivanov HTTP Headers plugin versions up to 1.18.11. It is CWE-79 with CVSS 3.1 score 5.9. The vector indicates network access, low attack complexity, high privileges, required user interaction, and changed scope.
Likely exposure
Exposure is limited to WordPress sites running the HTTP Headers plugin at version 1.18.11 or earlier. The source states admin-level authentication is required, so risk increases where admin accounts are shared, weakly protected, or already compromised.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not listed as KEV. No exploit details or proof-of-concept information are included in the bundle. Treat exploitation as plausible only after authenticated admin access.
Researcher notes
Evidence is sparse. The bundle identifies authenticated admin+ stored XSS, affected versions up to 1.18.11, CWE-79, and CVSS vector. It does not identify the vulnerable parameter, a patch version, exploit evidence, or detailed remediation steps.
Mitigation direction
- Inventory WordPress sites for the HTTP Headers plugin and installed version.
- Check vendor or Patchstack guidance for the fixed version before updating.
- Upgrade affected installations if a fixed release is available.
- Restrict WordPress administrator access to trusted users only.
- Enforce MFA and strong password controls for administrator accounts.
- Review plugin configuration for unexpected stored script or markup.
Validation and detection
- Confirm whether HTTP Headers is installed and active on each WordPress site.
- Verify the plugin version is later than 1.18.11, if vendor guidance confirms a fix.
- Review WordPress admin audit logs for recent plugin setting changes.
- Check for unauthorized administrator accounts or suspicious privilege changes.
- Document compensating controls where immediate update is unavailable.
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-2023-37874 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
- 5.9 (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: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:H/UI:R/S:C/C:L/I:L/A:L1.73.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L
Source materials
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.