Deserialization in Friendsofsymfony1 Symfony1

CVE-2024-28861

Symfony 1 is a community-driven fork of the 1.x branch of Symfony, a PHP framework for web projects. Starting in version 1.1.0 and prior to version 1.5.19, Symfony 1 has a gadget chain due to dangerous deserialization in `sfNamespacedParam…

Vulnerability class: Insecure Deserialization

EPSS: 0.015 (71.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-28861?
CVE-2024-28861 is a critical-severity vulnerability in Friendsofsymfony1 Symfony1, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2024-03-22.
How severe is CVE-2024-28861?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2024-28861 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.