Security readout for executives and security teams
Plain-English summary
CVE-2026-1127 affects the WordPress Timeline Event History plugin through version 3.2. A malicious link could cause script to run in a victim’s browser if they click it. This can support session theft or content manipulation risks, but it requires user interaction and is rated medium severity.
Executive priority
Treat as a moderate web risk. Prioritize internet-facing WordPress sites, especially those used by administrators or customers. The main urgency is reducing phishing-assisted browser compromise while waiting for or applying vendor guidance.
Technical view
The issue is reflected cross-site scripting in the plugin’s id parameter, caused by insufficient input sanitization and output escaping. It is unauthenticated, network-reachable, and requires user interaction. CVSS 3.1 is 6.1 with scope changed and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to WordPress sites using Timeline Event History versions up to and including 3.2. Sites not using this plugin are not affected based on the provided sources.
Exploitation context
No CISA KEV listing or cited source indicates active exploitation. Exploitation requires tricking a user into opening a crafted link, so phishing or targeted social engineering is the likely path.
Researcher notes
The source bundle states all versions up to 3.2 are vulnerable, while the structured affected entry is ambiguous. No patch version is provided. Analysis should rely on plugin inventory, version confirmation, and vendor guidance rather than assuming a fixed release.
Mitigation direction
- Inventory WordPress sites for the Timeline Event History plugin.
- Identify whether plugin version is 3.2 or earlier.
- Check the vendor or WordPress plugin page for an updated release or guidance.
- Disable or remove the plugin where business impact allows until guidance is available.
- Monitor web and security logs for suspicious requests involving the affected parameter.
Validation and detection
- Confirm plugin presence and version in WordPress administration or asset inventory.
- Review whether the plugin is enabled on public-facing WordPress sites.
- Verify any vendor-provided update has been applied when available.
- Review security tooling for reflected XSS findings tied to this plugin.
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-2026-1127 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
- 6.1 (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: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:N/UI:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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.