CVE-2019-17550: The Blog2Social plugin before 5.9.0 for WordPress is affected by: Cross Site Scripting (XSS). The impact is: Allows an attacker to execute arbitrary HTML and JavaScript code via the b2s_id parameter.

medium Affects blog2social (WordPress plugin). Feed 2026.10.29.1, updated 2026-10-28; published 2019-11-13; advisory modified 2026-06-17.

The Blog2Social plugin before 5.9.0 for WordPress is affected by: Cross Site Scripting (XSS). The impact is: Allows an attacker to execute arbitrary HTML and JavaScript code via the b2s_id parameter.

Package: blog2social (WordPress plugin) WordPress
Affected versions: <5.9.0
Fixed in: 5.9.0
Severity: medium CVSS 6.1
Exploitation: not on CISA KEV · EPSS 1% (71.1th percentile)
Published: 2019-11-13
Source: nvd

References

CWE-79

NVD record blog2social (WordPress plugin) advisories

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden wordpress /var/www/html

# or, without Composer
pipx install phpwarden   &&   phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

Install docs How findings are ranked

Related advisories

CVE-2019-13572 critical The Adenion Blog2Social plugin through 5.5.0 for WordPress allows SQL Injection. same package: blog2social (WordPress plugin)
CVE-2022-3246 high The Blog2Social: Social Media Auto Post & Scheduler WordPress plugin before 6.9.10 does no same package: blog2social (WordPress plugin)
CVE-2021-24137 high Unvalidated input in the Blog2Social WordPress plugin, versions before 6.3.1, lead to SQL same package: blog2social (WordPress plugin)
CVE-2021-24956 medium The Blog2Social: Social Media Auto Post & Scheduler WordPress plugin before 6.8.7 does not same package: blog2social (WordPress plugin)
CVE-2019-9576 medium The Blog2Social plugin before 5.0.3 for WordPress allows wp-admin/admin.php?page=blog2soci same package: blog2social (WordPress plugin)
CVE-2023-3936 medium The Blog2Social WordPress plugin before 7.2.1 does not sanitise and escape a parameter bef same package: blog2social (WordPress plugin)