CVE-2023-4599 json
Email Encoder <= 2.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
published 2023-08-30 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-54452
- cvss
- 6.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 44%
- public exploits
- 0
- none known
Summary
The Email Encoder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'eeb_mailto' shortcode in versions up to, and including, 2.1.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. A partial patch was issued in version 2.1.8. The vulnerability was fully patched in 2.1.9.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- onlineoptimisation Email Encoder – Protect Email Addresses and Phone Numbers
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wordfence.com
/threat-intel/vulnerabilities/id/e90f04e4-eb4c-4822-89c6-79f553987c37?source=cve
third-party-advisory
-
plugins.trac.wordpress.org
/browser/email-encoder-bundle/tags/2.1.7/core/includes/classes/class-email-encoder-bundle-run.php#L529
product
-
plugins.trac.wordpress.org
/changeset/2958823/email-encoder-bundle#file60
product
- plugins.trac.wordpress.org /changeset/2994384/email-encoder-bundle/trunk?contextall=1&old=2958823&old_path=%2Femail-encoder-bundle%2Ftrun
Sources
- CVE List CVE-2023-4599
- NVD CVE-2023-4599
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.