CVE-2019-18889
Serializing certain cache adapter interfaces could result in remote code injection.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 33.2%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
An issue was discovered in Symfony 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. Serializing certain cache adapter interfaces could result in remote code injection. This is related to symfony/cache.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 33.25% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-94
- Affected
- sensiolabs/symfony · fedoraproject/fedora
- Source
- cve@mitre.org
EPSS 33.2% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/symfony/symfony/releases/tag/v4.3.8Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
- https://symfony.com/blog/cve-2019-18889-forbid-serializing-abstractadapter-and-tagawareadapter-instancesVendor Advisory
- https://symfony.com/blog/symfony-4-3-8-releasedRelease Notes
- https://github.com/symfony/symfony/releases/tag/v4.3.8Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
- https://symfony.com/blog/cve-2019-18889-forbid-serializing-abstractadapter-and-tagawareadapter-instancesVendor Advisory
- https://symfony.com/blog/symfony-4-3-8-releasedRelease Notes
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.