CVE-2026-2506 json
EM Cost Calculator <= 2.3.1 - Unauthenticated Stored Cross-Site Scripting via 'customer_name'
published 2026-02-26 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-8810
- cvss
- 6.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 16%
- public exploits
- 0
- none known
Summary
The EM Cost Calculator plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.3.1. This is due to the plugin storing attacker-controlled 'customer_name' data and rendering it in the admin customer list without output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute when an administrator views the EMCC Customers page.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 8 mo ago
Exploit prediction
0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- motahar1 EM Cost Calculator
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/1eef338a-ccc7-41a2-b87a-0945e39380d2?source=cve
- plugins.trac.wordpress.org /browser/cost-calculator/tags/2.3.1/em-cost-calculator-widget.php#L655
- plugins.trac.wordpress.org /browser/cost-calculator/tags/2.3.1/em-cost-calculator-widget.php#L682
- plugins.trac.wordpress.org /browser/cost-calculator/tags/2.3.1/em-cost-calculator-widget.php#L701
- plugins.trac.wordpress.org /browser/cost-calculator/tags/2.3.1/em-cost-calc-admin-page.php#L59
Sources
- CVE List CVE-2026-2506
- NVD CVE-2026-2506
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.