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Vulnerabilities

Vulnerability · CVE-2018-19790

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.

Published Dec 18, 2018 · catalog updated Jun 17, 2026 · An open redirect was

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2018-19790. EPSS is 1.49%. Act only if a listed version of An open redirect was is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An open redirect was).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.49%
Remediation
Version ranges on file
Affected products
cpe sensiolabs/symfony

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 input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe sensiolabs/symfony< 2.7.50
  • cpe sensiolabs/symfony< 2.8.49
  • cpe sensiolabs/symfony< 3.4.20
  • cpe sensiolabs/symfony< 4.0.15
  • cpe sensiolabs/symfony< 4.1.9
  • cpe sensiolabs/symfony< 4.2.1

How to fix CVE-2018-19790

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2018-19790. EPSS is 1.49%. Act only if a listed version of An open redirect was is installed.

Which versions are affected?

Compare what you have installed with < 2.7.50, < 2.8.49, < 3.4.20, < 4.0.15, < 4.1.9, < 4.2.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-601: URL Redirection to Untrusted Site (Open Redirect). EPSS 1.49%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Symfony security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 18, 2018 · Monitored products — high

    Detected

    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 input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    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 input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

Sources

  • CVE.orgVulnerability recordCVE-2018-19790

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2018-19790

    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 input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 8, 2026
  • Monitored products — highNov 7, 2026