An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0…
Priority LOW 37CWE-88Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-88.
Summary
An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. If an application passes unvalidated user input as the file for which MIME type validation should occur, then arbitrary arguments are passed to the underlying file command. This is related to symfony/http-foundation (and symfony/mime in 4.3.x).
Why it matters now
EPSS 0.02248 82nd percentileScored 2026-11-07
Fix Fixed symfony/http-foundation (Packagist): 2.8.52, 3.4.35, 4.2.12 +1symfony/mime (Packagist): 4.3.8+1 more product
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | symfony/http-foundation (Packagist) | 2.0.0 to before 2.8.52 | 2.8.52 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/http-foundation (Packagist) | 3.0.0 to before 3.4.35 | 3.4.35 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/http-foundation (Packagist) | 4.0.0 to before 4.2.12 | 4.2.12 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/http-foundation (Packagist) | 4.3.0 to before 4.3.8 | 4.3.8 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/mime (Packagist) | 4.3.0 to before 4.3.8 | 4.3.8 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/symfony (Packagist) | 2.0.0 to before 2.8.52 | 2.8.52 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/symfony (Packagist) | 3.0.0 to before 3.4.35 | 3.4.35 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/symfony (Packagist) | 4.0.0 to before 4.2.12 | 4.2.12 | Patch available | GHSA-xhh6-956q-4q69 |
| — | symfony/symfony (Packagist) | 4.3.0 to before 4.3.8 | 4.3.8 | Patch available | GHSA-xhh6-956q-4q69 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- symfony/http-foundation (Packagist) Vendor— Affected 2.0.0 to before 2.8.52 Fixed in 2.8.52 Patch available GHSA-xhh6-956q-4q69
- symfony/http-foundation (Packagist) Vendor— Affected 3.0.0 to before 3.4.35 Fixed in 3.4.35 Patch available GHSA-xhh6-956q-4q69
- symfony/http-foundation (Packagist) Vendor— Affected 4.0.0 to before 4.2.12 Fixed in 4.2.12 Patch available GHSA-xhh6-956q-4q69
- symfony/http-foundation (Packagist) Vendor— Affected 4.3.0 to before 4.3.8 Fixed in 4.3.8 Patch available GHSA-xhh6-956q-4q69
- symfony/mime (Packagist) Vendor— Affected 4.3.0 to before 4.3.8 Fixed in 4.3.8 Patch available GHSA-xhh6-956q-4q69
- symfony/symfony (Packagist) Vendor— Affected 2.0.0 to before 2.8.52 Fixed in 2.8.52 Patch available GHSA-xhh6-956q-4q69
- symfony/symfony (Packagist) Vendor— Affected 3.0.0 to before 3.4.35 Fixed in 3.4.35 Patch available GHSA-xhh6-956q-4q69
- symfony/symfony (Packagist) Vendor— Affected 4.0.0 to before 4.2.12 Fixed in 4.2.12 Patch available GHSA-xhh6-956q-4q69
- symfony/symfony (Packagist) Vendor— Affected 4.3.0 to before 4.3.8 Fixed in 4.3.8 Patch available GHSA-xhh6-956q-4q69
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* | 2.8.0 – 2.8.50; 3.4.0 – 3.4.34; 4.2.0 – 4.2.11; 4.3.0 – 4.3.7 | Vulnerable | sensiolabs |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 31 | Vulnerable | Fedoraproject |
- cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* Versions 2.8.0 – 2.8.50; 3.4.0 – 3.4.34; 4.2.0 – 4.2.11; 4.3.0 – 4.3.7 Vulnerable ·sensiolabs
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
Remediation
- Fix · GHSA-xhh6-956q-4q69 symfony/http-foundation (Packagist) Fixed in 2.8.52 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/http-foundation (Packagist) Fixed in 3.4.35 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/http-foundation (Packagist) Fixed in 4.2.12 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/http-foundation (Packagist) Fixed in 4.3.8 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/mime (Packagist) Fixed in 4.3.8 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/symfony (Packagist) Fixed in 2.8.52 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/symfony (Packagist) Fixed in 3.4.35 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/symfony (Packagist) Fixed in 4.2.12 Advisory →
- Fix · GHSA-xhh6-956q-4q69 symfony/symfony (Packagist) Fixed in 4.3.8 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2019-18888
- 2026-10-03 Alias added: GHSA-xhh6-956q-4q69
References
Advisory 5
Other 12
- https://symfony.com/blog/symfony-4-3-8-released
- https://github.com/symfony/symfony/releases/tag/v4.3.8
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2019-18888.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mime/CVE-2019-18888.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-18888.yaml
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ
- https://lists.fedoraproject.org/archives/list/[email protected]/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX
- https://lists.fedoraproject.org/archives/list/[email protected]/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA
- https://lists.fedoraproject.org/archives/list/[email protected]/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ
- https://symfony.com/cve-2019-18888
Sources
- CVE-2019-18888 · CVE Program
- CVE-2019-18888 · NVD
- FIRST EPSS
- GHSA-xhh6-956q-4q69 · 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