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Fencer Intel
critical 9.8

CVE-2019-11325 json

Improper Input Validation in Symfony

published 6y ago modified 4mo ago also GHSA-w4rc-rx25-8m86 , EUVD-2020-0317

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.4%
EPSS 3.4% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

An issue was discovered in Symfony before 4.2.12 and 4.3.x before 4.3.8. The VarExport component incorrectly escapes strings, allowing some specially crafted ones to escalate to execution of arbitrary PHP code. This is related to symfony/var-exporter.

Patch / fix

  • packagist symfony/symfony 4.2.12, 4.3.8
  • packagist symfony/var-exporter 4.2.12, 4.3.8
  • sensiolabs symfony 4.2.12, 4.3.8
  • symfony Debian 14, Debian 13, Debian 12 4.3.8+dfsg-1

debian advisories DEBIAN-CVE-2019-11325

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Exploit prediction

3.35% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist symfony/symfony
>=4.2.0, <4.2.12
>=4.3.0, <4.3.8
4.2.12
4.3.8
packagist symfony/var-exporter
>=4.2.0, <4.2.12
>=4.3.0, <4.3.8
4.2.12
4.3.8

Classification

Weakness
  • CWE-116 Improper Encoding or Escaping of Output

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.