Home/CVE/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, validation
CVE

CVE-2019-10909

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, validation

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, validation messages are not escaped, which can lead to XSS when user input is included. This is related to symfony/framework-bundle.

MEDIUM · CVSS 5.4 EPSS 0.00355
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

7
sensiolabs symfony>= 2.7.0 and < 2.7.51
sensiolabs symfony>= 2.8.0 and < 2.8.50
sensiolabs symfony>= 3.4.0 and < 3.4.26
sensiolabs symfony>= 4.1.0 and < 4.1.12
sensiolabs symfony>= 4.2.0 and < 4.2.7
drupal>= 8.5.0 and < 8.5.15
drupal>= 8.6.0 and < 8.6.15
▤

Affected Packages

4
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Packagist drupal/core MEDIUM fixed in 8.6.15
Packagist drupal/drupal MEDIUM fixed in 8.5.15
Packagist symfony/framework-bundle MEDIUM fixed in 2.7.51
Packagist symfony/symfony MEDIUM fixed in 2.7.51
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 May 2019 · 10:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/symfony/symfony/commit/ab4d05358c3d0dd1a36fc8c306829f68e3dd84e2PatchThird Party Advisory
https://symfony.com/blog/cve-2019-10909-escape-validation-messages-in-the-php-templating-engineVendor Advisory
https://www.drupal.org/sa-core-2019-005Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_19Third Party Advisory
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