CVE-2024-28861

Name: CVE-2024-28861
Creator: NVD / NIST
Published: 2024-03-22T17:15:07.77+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.53%

Last modified Jun 17, 2026

CVE-2024-28861 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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 `sfNamespacedParameterHolder` class that would enable an attacker to get remote code execution if a developer deserializes user input in their project. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

Description

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 `sfNamespacedParameterHolder` class that would enable an attacker to get remote code execution if a developer deserializes user input in their project. Version 1.5.19 contains a patch for the issue.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.53%

71.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-502

Affected Software

Vendor	Product	Versions
Friendsofsymfony1	Symfony1	>= 1.1.0, < 1.5.9

References

https://github.com/FriendsOfSymfony1/symfony1/commit/0bd9d59c69221f49bfc8be8b871b79e12d7d171aPatch
https://github.com/FriendsOfSymfony1/symfony1/security/advisories/GHSA-pv9j-c53q-h433Exploit, Mitigation, Vendor Advisory
https://github.com/FriendsOfSymfony1/symfony1/commit/0bd9d59c69221f49bfc8be8b871b79e12d7d171aPatch
https://github.com/FriendsOfSymfony1/symfony1/security/advisories/GHSA-pv9j-c53q-h433Exploit, Mitigation, Vendor Advisory

Timeline

Published: Mar 22, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-28861?

How severe is CVE-2024-28861?

CVE-2024-28861 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.

How do I fix CVE-2024-28861?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-28861?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST