CVE-2026-1654
CVE-2026-1654 is a medium-severity vulnerability with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- EPSS exploit prediction: 0% (21st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-5549
- Weakness: CWE-79
- Published:
- Last modified:
Description
The Peter's Date Countdown plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `$_SERVER['PHP_SELF']` parameter in all versions up to, and including, 2.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Frequently asked questions
- What is CVE-2026-1654?
- The Peter's Date Countdown plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the `$_SERVER['PHP_SELF']` parameter in all versions up to, and including, 2.0.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
- How severe is CVE-2026-1654?
- CVE-2026-1654 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2026-1654 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-1654?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-1654 have an EU (EUVD) identifier?
- Yes. CVE-2026-1654 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5549.
- When was CVE-2026-1654 published?
- CVE-2026-1654 was published on 2026-02-05 and last updated on 2026-06-17.
References
- https://plugins.trac.wordpress.org/browser/peters-date-countdown/tags/2.0.0/datecountdown.php#L246
- https://plugins.trac.wordpress.org/changeset/3450122/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f8f8e436-2679-4ecb-831e-2b22dd99be32?source=cve
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