CVE-2026-6910 json
Bookero.pl <= 2.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
published 2026-07-09 4 mo ago modified 2026-07-09 4 mo ago also EUVD-2026-42528
- 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 28%
- public exploits
- 0
- none known
Summary
The Bookero.pl – system rezerwacji online plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `bookero_products` shortcode's `hide_products` (and `filter_products`) attributes in versions up to and including 2.2. This is due to insufficient input sanitization and output escaping in the `bookero_products()` function — the raw attribute value is concatenated directly into an inline `<script>` block without any escaping. This makes it possible for authenticated attackers with contributor-level access and above to inject arbitrary web scripts into pages that will execute whenever a user accesses the injected page.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 28% 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 |
Affected products
- safistudio Bookero.pl – system rezerwacji online
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/fd0e6ca6-f6a7-4e81-aea1-3b59de0173d6?source=cve
- plugins.trac.wordpress.org /browser/bookeropl/trunk/libraries/bookero-front.php#L174
- plugins.trac.wordpress.org /browser/bookeropl/tags/2.1/libraries/bookero-front.php#L174
- plugins.trac.wordpress.org /browser/bookeropl/trunk/libraries/bookero-front.php#L173
- plugins.trac.wordpress.org /browser/bookeropl/tags/2.1/libraries/bookero-front.php#L173
- plugins.trac.wordpress.org /changeset?reponame=&old=3524452%40bookeropl&new=3524452%40bookeropl
Sources
- CVE List CVE-2026-6910
- NVD CVE-2026-6910
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.