CVE-2021-38356
mediumpriority · track · 17EPSS 0.009 · 59 %ileEUUSEPSS · scored 2026-10-28
The NextScripts: Social Networks Auto-Poster <= 4.3.20 WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the $_REQUEST['page'] parameter which is echoed out on inc/nxs_class_snap.php by supplying the appropriate value 'nxssnap-post' to load the page in $_GET['page'] along with malicious JavaScript in $_POST['page'].
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
- nextscripts social networks auto poster≤ 4.3.20nvdUScpe:2.3:a:nextscripts:social_networks_auto_poster:*:*:*:*:*:*:*:*
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2021-38356cnnvd
- https://packetstormsecurity.com/files/164706/WordPress-NextScripts-Social-Networks-Auto-Poster-4.3.20-XSS.htmlcnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021110310cnnvd
- https://www.wordfence.com/blog/2021/10/xss-vulnerability-in-nextscripts-social-networks-auto-poster-plugin-impacts-100000-sites/cnnvd
- https://www.wordfence.com/blog/2021/10/xss-vulnerability-in-nextscripts-social-networks-auto-poster-plugin-impacts-100000-sites/enisa_euvd
- https://www.wordfence.com/blog/2021/10/xss-vulnerability-in-nextscripts-social-networks-auto-poster-plugin-impacts-100000-sites/ExploitThird Party Advisorynvd
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