CVE Explorer
CVE-2026-8844
The Responsive Check plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'rspcheck' shortcode in versions up to, and including, 0.0.3. This is due to insufficient input sanitization and output escaping on the 'url' (and 'button') shortcode attributes in the rspc_check_shortcode() function, which are echoed directly into iframe src attributes without esc_attr() or esc_url(). This makes it possible for authenticated attackers, with contributor-level access and above, to injec
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Responsive Check","vendor":"kevin1804","versions":[{"lessThanOrEqual":"0.0.3","status":"affected","version":"0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":6.4,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"url":"https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L14"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/references/2
{"url":"https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L25"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/references/1
{"url":"https://plugins.trac.wordpress.org/browser/responsive-checker-real-time/trunk/responsive-check.php#L54"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/references/3
{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/d1d571e3-cf6d-4e9b-a3d7-e7e19497b5a9?source=cve"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f921e058744363787a0e1cde761ff7fbd5331b554588721394b3fe28beabef72 · sha256:9e001a82a8eba66e… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.