Security readout for executives and security teams
Plain-English summary
CVE-2026-1654 affects the Peter’s Date Countdown WordPress plugin through version 2.0.0. A malicious link could cause script to run in a user’s browser if that user clicks it. This is mainly a phishing-assisted website risk, not a server takeover by itself.
Executive priority
Treat as a routine but prompt web remediation item. Prioritize public-facing WordPress sites, especially where administrators or authenticated users may click external links while logged in.
Technical view
The issue is reflected cross-site scripting via $_SERVER['PHP_SELF'] caused by insufficient sanitization and output escaping. It is unauthenticated, network-reachable, low complexity, but requires user interaction. CVSS 3.1 is 6.1 with changed scope and low confidentiality and integrity impact.
Likely exposure
Exposure is limited to WordPress sites with Peter’s Date Countdown installed at versions up to and including 2.0.0. Sites not using this plugin are not affected based on the provided sources.
Exploitation context
The CVE states attackers must trick a user into an action such as clicking a link. The provided data does not indicate CISA KEV listing or confirmed active exploitation.
Researcher notes
The vulnerable pattern is documented in the 2.0.0 plugin source, and a WordPress Trac changeset is referenced. The source bundle does not provide reliable evidence of exploitation in the wild or a clearly named fixed release.
Mitigation direction
- Identify WordPress sites using Peter’s Date Countdown.
- Check whether installed versions are 2.0.0 or earlier.
- Review vendor and WordPress plugin guidance for an updated fixed version.
- If no supported fix is available, disable or remove the plugin.
- Use web application filtering as a temporary compensating control.
Validation and detection
- Inventory WordPress plugins across public sites.
- Confirm the plugin slug and installed version from WordPress administration or asset records.
- Review application code or vendor diff for output escaping around PHP_SELF.
- Check web and security logs for suspicious links targeting plugin pages.
- Verify remediation by confirming the vulnerable plugin version is absent.
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-2026-1654 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
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f8f8e436-2679-4ecb-831e-2b22dd99be32?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/peters-date-countdown/tags/2.0.0/datecountdown.php#L246CVE reference
- https://plugins.trac.wordpress.org/changeset/3450122/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.
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.