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Fencer Vulns
high 8.8

CVE-2018-11406 json

Symfony CSRF Token Fixation

published 2018-06-13 8 y ago modified 2026-06-17 4 mo ago also GHSA-g4g7-q726-v5hg , EUVD-2022-3882

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

An issue was discovered in the Security component in Symfony 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11. By default, a user's session is invalidated when the user is logged out. This behavior can be disabled through the invalidate_session option. In this case, CSRF tokens were not erased during logout which allowed for CSRF token fixation.

Patch / fix

  • packagist symfony/symfony 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  • packagist symfony/security-bundle 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  • packagist symfony/security-http 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  • packagist symfony/security 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  • sensiolabs symfony 2.7.48, 2.8.41, 3.3.17, 3.4.11, 4.0.11
  • symfony Debian 14, Debian 13, Debian 12 3.4.12+dfsg-1

debian advisories DEBIAN-CVE-2018-11406

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-2018-11406 updated

php-symfony: Multiple flaws

  • 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

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P
GitHub 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist symfony/symfony
>=2.7.0, <2.7.48
>=2.8.0, <2.8.41
>=3.0.0, <3.3.17
>=3.4.0, <3.4.11
>=4.0.0, <4.0.11
2.7.48
2.8.41
3.3.17
3.4.11
4.0.11
packagist symfony/security-bundle
>=2.7.0, <2.7.48
>=2.8.0, <2.8.41
>=3.0.0, <3.3.17
>=3.4.0, <3.4.11
>=4.0.0, <4.0.11
2.7.48
2.8.41
3.3.17
3.4.11
4.0.11
packagist symfony/security-http
>=2.7.0, <2.7.48
>=2.8.0, <2.8.41
>=3.0.0, <3.3.17
>=3.4.0, <3.4.11
>=4.0.0, <4.0.11
2.7.48
2.8.41
3.3.17
3.4.11
4.0.11
packagist symfony/security
>=2.7.0, <2.7.48
>=2.8.0, <2.8.41
>=3.0.0, <3.3.17
>=3.4.0, <3.4.11
>=4.0.0, <4.0.11
2.7.48
2.8.41
3.3.17
3.4.11
4.0.11

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

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.