rexCrawler <= 1.0.15 - Reflected Cross-Site Scripting via 'url' and 'regex' Parameters
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The rexCrawler plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'url' and 'regex' parameters in the search-pattern tester page in all versions up to, and including, 1.0.15 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick an administrator into performing an action such as clicking on a link. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| larsdrasmussen | rexCrawler | up to 1.0.15 | — | No fix listed | CNA |
- rexCrawler Vendorlarsdrasmussen Affected up to 1.0.15 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2277
- 2026-10-03 Alias added: GHSA-r773-4wcf-9vm6
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2a17f466-bc4b-4668-8ff9-e8b316e3b5b7?source=cve
- https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php#L25
- https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_test.php#L25
- https://plugins.trac.wordpress.org/browser/rexcrawler/trunk/admin_regex_test.php#L29
- https://plugins.trac.wordpress.org/browser/rexcrawler/tags/1.0.15/admin_regex_test.php#L29
More larsdrasmussen vulnerabilities
- TI-2026-01925 rexCrawler <= 1.0.15 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-2277 · CVE Program
- CVE-2026-2277 · NVD
- FIRST EPSS
- GHSA-r773-4wcf-9vm6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences