CVE-2026-4073 json
pdfl.io <= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'text' Shortcode Attribute
published 7mo ago modified 3mo ago also EUVD-2026-20433
- cvss
- 6.4
- 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 23%
- public exploits
- 0
- none known
Summary
The pdfl.io plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pdflio' shortcode in all versions up to, and including, 1.0.5. This is due to insufficient input sanitization and output escaping on the 'text' shortcode attribute. The output_shortcode() function directly concatenates the user-supplied $text variable into HTML output without applying esc_html() or any other escaping function. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-09).
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 |
Affected products
- dougblackjr pdfl.io
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/2bf70203-61c0-406a-9110-b60761b4a513?source=cve
- plugins.trac.wordpress.org /browser/pdfl-io/trunk/pdflio.php#L117
- plugins.trac.wordpress.org /browser/pdfl-io/tags/1.0.5/pdflio.php#L117
- plugins.trac.wordpress.org /browser/pdfl-io/trunk/pdflio.php#L81
- plugins.trac.wordpress.org /browser/pdfl-io/tags/1.0.5/pdflio.php#L81
- plugins.trac.wordpress.org /changeset?sfp_email=&sfph_mail=&reponame=&old=3492458%40pdfl-io&new=3492458%40pdfl-io
Sources
- CVE List CVE-2026-4073
- NVD CVE-2026-4073
Fencer Intel 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.