What is CVE-2013-4751?

CVE-2013-4751 is a high-severity vulnerability in Sensiolabs Symfony, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2019-11-01.

How severe is CVE-2013-4751?

High severity. CVSS v3 base score is 8.1 out of 10.

Improper input validation in Sensiolabs Symfony

CVE-2013-4751

php-symfony2-Validator has loss of information during serialization

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2019-11-01 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (73.1th percentile), scored 2026-10-23.

Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
lists.fedoraproject.org/pipermail/package-announce/2013-August/114436.html (Mailing List, Third Party Advisory)
lists.fedoraproject.org/pipermail/package-announce/2013-August/114380.html (Mailing List, Third Party Advisory)
symfony.com/blog/security-releases-symfony-2-0-24-2-1-12-2-2-5-and-2-3-3-releas… (Patch, Vendor Advisory)
www.securityfocus.com/bid/61709 (VDB Entry, Third Party Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/86364 (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2013-4751?: CVE-2013-4751 is a high-severity vulnerability in Sensiolabs Symfony, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2019-11-01.
How severe is CVE-2013-4751?: High severity. CVSS v3 base score is 8.1 out of 10.