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Fencer Vulns
medium 6.1

CVE-2018-19790 json

Symfony Open Redirect

published 2018-12-18 7 y ago modified 2026-06-17 4 mo ago also GHSA-89r2-5g34-2g47 , EUVD-2022-3158

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

An open redirect was discovered in Symfony 2.7.x before 2.7.50, 2.8.x before 2.8.49, 3.x before 3.4.20, 4.0.x before 4.0.15, 4.1.x before 4.1.9 and 4.2.x before 4.2.1. By using backslashes in the `_failure_path` input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

Patch / fix

  • packagist symfony/security-http 2.7.50, 2.8.49, 3.4.20, 4.0.15, 4.1.9, 4.2.1
  • packagist symfony/security 2.7.50, 2.8.49, 3.4.19, 4.0.15, 4.1.9, 4.2.1
  • packagist symfony/symfony 2.7.50, 2.8.49, 3.4.20, 4.0.15, 4.1.9
  • sensiolabs symfony 2.7.50, 2.8.49, 3.4.20, 4.0.15, 4.1.9, 4.2.1
  • symfony Debian 14, Debian 13, Debian 12 3.4.20+dfsg-1

debian advisories DEBIAN-CVE-2018-19790

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-19790 updated

php-symfony: Multiple vulnerabilities fixed in symfony 2.8.7

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.49% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N
GitHub 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
packagist symfony/security-http
>=2.7.38, <2.7.50
>=2.8.0, <2.8.49
>=3.0.0, <3.4.20
>=4.0.0, <4.0.15
>=4.1.0, <4.1.9
>=4.2.0, <4.2.1
2.7.50
2.8.49
3.4.20
4.0.15
4.1.9
4.2.1
packagist symfony/security
>=2.7.38, <2.7.50
>=2.8.0, <2.8.49
>=3.0.0, <3.4.19
>=4.0.0, <4.0.15
>=4.1.0, <4.1.9
>=4.2.0, <4.2.1
2.7.50
2.8.49
3.4.19
4.0.15
4.1.9
4.2.1
packagist symfony/symfony
>=2.7.38, <2.7.50
>=2.8.0, <2.8.49
>=3.0.0, <3.4.20
>=4.0.0, <4.0.15
>=4.1.0, <4.1.9
2.7.50
2.8.49
3.4.20
4.0.15
4.1.9

Classification

Weakness
  • CWE-601 URL Redirection to Untrusted Site

References

Sources

Fencer Vulns 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.