Gadget chain in Symfony 1 due to uncontrolled unserialized input in sfNamespacedParameterHolder
Priority HIGH 76CWE-502Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01546 75th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed symfony1 (FriendsOfSymfony1): 1.5.19friendsofsymfony1/symfony1 (Packagist): 1.5.19
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| FriendsOfSymfony1 | symfony1 | 1.1.0 to before 1.5.19 | 1.5.19 | Patch available | CNA |
| — | friendsofsymfony1/symfony1 (Packagist) | 1.1.0 to before 1.5.19 | 1.5.19 | Patch available | GHSA-pv9j-c53q-h433 |
- symfony1 VendorFriendsOfSymfony1 Affected 1.1.0 to before 1.5.19 Fixed in 1.5.19 Patch available CNA
- friendsofsymfony1/symfony1 (Packagist) Vendor— Affected 1.1.0 to before 1.5.19 Fixed in 1.5.19 Patch available GHSA-pv9j-c53q-h433
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:friendsofsymfony1:symfony1:*:*:*:*:*:*:*:* | 1.1.0 to before 1.5.9 | Vulnerable | FriendsOfSymfony1 |
- cpe:2.3:a:friendsofsymfony1:symfony1:*:*:*:*:*:*:*:* Versions 1.1.0 to before 1.5.9 Vulnerable ·FriendsOfSymfony1
Remediation
- Fix · CNA symfony1 (FriendsOfSymfony1) Fixed in 1.5.19
- Fix · GHSA-pv9j-c53q-h433 friendsofsymfony1/symfony1 (Packagist) Fixed in 1.5.19 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-28861
- 2026-10-03 Alias added: GHSA-pv9j-c53q-h433
References
Patch 1
More FriendsOfSymfony1 Symfony1 vulnerabilities
- TI-2024-19058 Gadget chain in Symfony 1 due to vulnerable Swift Mailer dependency CVSS 3.1CRITICAL 9.0
Sources
- CVE-2024-28861 · CVE Program
- CVE-2024-28861 · NVD
- FIRST EPSS
- GHSA-pv9j-c53q-h433 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences