What’s Vulnerable › Vulnerabilities

CVE-2019-10911

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-05-16 · updated 2026-06-17
• Weakness: CWE-287

Description

In Symfony before 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7, a vulnerability would allow an attacker to authenticate as a privileged user on sites with user registration and remember me login functionality enabled. This is related to symfony/security.

Affected products

• Drupal: from 8.5.0 before 8.5.15; from 8.6.0 before 8.6.15 — fixed in 8.5.15, 8.6.15
• symfony: from 2.7.0 before 2.7.51; from 2.8.0 before 2.8.50; from 3.4.0 before 3.4.26; from 4.1.0 before 4.1.12; from 4.2.0 before 4.2.7 — fixed in 2.7.51, 2.8.50, 3.4.26, 4.1.12, 4.2.7

How to fix

Upgrade to a fixed version: Drupal 8.5.15, 8.6.15; symfony 2.7.51, 2.8.50, 3.4.26, 4.1.12. Check the vendor advisory for mitigations.

References

• https://github.com/symfony/symfony/commit/a29ce2817cf43bb1850cf6af114004ac26c7a081
• https://symfony.com/blog/cve-2019-10911-add-a-separator-in-the-remember-me-cookie-hash
• https://www.synology.com/security/advisory/Synology_SA_19_19
• https://github.com/symfony/symfony/commit/a29ce2817cf43bb1850cf6af114004ac26c7a081
• https://symfony.com/blog/cve-2019-10911-add-a-separator-in-the-remember-me-cookie-hash
• https://www.synology.com/security/advisory/Synology_SA_19_19

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