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 `` 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.
CVE-2026-6910
Score 6.4 from GitHub Security Advisory published 2026-07-09. a secondary CVSS source baseline 6.4; sources differ by 0.0.
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.4
- EG Score
- 6.4(high)
- EPSS
- 11.5%
- KEV
- Not listed
Published
July 9, 2026
Last Modified
July 9, 2026
References (6)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bookeropl/tags/2.1/libraries/bookero-front.php#L173
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bookeropl/tags/2.1/libraries/bookero-front.php#L174
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bookeropl/trunk/libraries/bookero-front.php#L173
- security@wordfencehttps://plugins.trac.wordpress.org/browser/bookeropl/trunk/libraries/bookero-front.php#L174
- security@wordfencehttps://plugins.trac.wordpress.org/changeset?reponame=&old=3524452%40bookeropl&new=3524452%40bookeropl
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/fd0e6ca6-f6a7-4e81-aea1-3b59de0173d6?source=cve
Vendor Advisories for CVE-2026-6910(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 26× in last 7d / 26× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 17:34 UTCEG score recompute
- 2026-07-15 17:34 UTCGHSA enrichment
- 2026-07-15 16:57 UTCEPSS rescore
- 2026-07-15 02:00 UTCEPSS rescore
- 2026-07-14 19:38 UTCEG score recompute
- 2026-07-14 19:38 UTCGHSA enrichment
- 2026-07-13 22:31 UTCEPSS rescore
- 2026-07-13 21:39 UTCEG score recompute
- 2026-07-13 21:39 UTCGHSA enrichment
- 2026-07-13 06:13 UTCEPSS rescore
- 2026-07-13 06:13 UTCEPSS rescore
- 2026-07-12 23:44 UTCEG score recompute
- 2026-07-12 23:44 UTCGHSA enrichment
- 2026-07-12 05:46 UTCEPSS rescore
- 2026-07-12 01:48 UTCEG score recompute
- 2026-07-12 01:48 UTCGHSA enrichment
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 08:27 UTCEPSS rescore
- 2026-07-11 03:53 UTCEG score recompute
- 2026-07-11 03:53 UTCGHSA enrichment
- 2026-07-10 05:57 UTCEG score recompute
- 2026-07-10 05:57 UTCGHSA enrichment
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 19:10 UTCEPSS rescore
- 2026-07-09 08:02 UTCEG score recompute
Show 1 moreShow fewer
- 2026-07-09 08:01 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-6910?
When was CVE-2026-6910 disclosed?
Is CVE-2026-6910 actively exploited?
What is the CVSS score of CVE-2026-6910?
How do I remediate CVE-2026-6910?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-6910
Is Your Infrastructure Affected by CVE-2026-6910?
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