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TI-2016-03800 Aliases CVE-2016-4423GHSA-whgv-8cg3-7hcm

The attemptAuthentication function in…

Priority LOW 37CWE-399Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-399 and the CVSS impact.

Summary

The attemptAuthentication function in Component/Security/Http/Firewall/UsernamePasswordFormAuthenticationListener.php in Symfony before 2.3.41, 2.7.x before 2.7.13, 2.8.x before 2.8.6, and 3.0.x before 3.0.6 does not limit the length of a username stored in a session, which allows remote attackers to cause a denial of service (session storage consumption) via a series of authentication attempts with long, non-existent usernames.

Why it matters now

EPSS 0.01862 79th percentileScored 2026-11-07
Fix Fixed symfony/security-http (Packagist): 2.3.41, 2.7.13, 2.8.6 +1symfony/security (Packagist): 2.3.41, 2.7.13, 2.8.6 +1+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—symfony/security-http (Packagist)2.3.0 to before 2.3.412.3.41Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security-http (Packagist)2.4.0 to before 2.7.132.7.13Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security-http (Packagist)2.8.0 to before 2.8.62.8.6Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security-http (Packagist)3.0.0 to before 3.0.63.0.6Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security (Packagist)2.3.0 to before 2.3.412.3.41Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security (Packagist)2.4.0 to before 2.7.132.7.13Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security (Packagist)2.8.0 to before 2.8.62.8.6Patch availableGHSA-whgv-8cg3-7hcm
—symfony/security (Packagist)3.0.0 to before 3.0.63.0.6Patch availableGHSA-whgv-8cg3-7hcm
—symfony/symfony (Packagist)2.3.0 to before 2.3.412.3.41Patch availableGHSA-whgv-8cg3-7hcm
—symfony/symfony (Packagist)2.4.0 to before 2.7.132.7.13Patch availableGHSA-whgv-8cg3-7hcm
—symfony/symfony (Packagist)2.8.0 to before 2.8.62.8.6Patch availableGHSA-whgv-8cg3-7hcm
—symfony/symfony (Packagist)3.0.0 to before 3.0.63.0.6Patch availableGHSA-whgv-8cg3-7hcm
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • symfony/security-http (Packagist) Vendor— Affected 2.3.0 to before 2.3.41 Fixed in 2.3.41 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security-http (Packagist) Vendor— Affected 2.4.0 to before 2.7.13 Fixed in 2.7.13 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security-http (Packagist) Vendor— Affected 2.8.0 to before 2.8.6 Fixed in 2.8.6 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security-http (Packagist) Vendor— Affected 3.0.0 to before 3.0.6 Fixed in 3.0.6 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security (Packagist) Vendor— Affected 2.3.0 to before 2.3.41 Fixed in 2.3.41 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security (Packagist) Vendor— Affected 2.4.0 to before 2.7.13 Fixed in 2.7.13 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security (Packagist) Vendor— Affected 2.8.0 to before 2.8.6 Fixed in 2.8.6 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/security (Packagist) Vendor— Affected 3.0.0 to before 3.0.6 Fixed in 3.0.6 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/symfony (Packagist) Vendor— Affected 2.3.0 to before 2.3.41 Fixed in 2.3.41 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/symfony (Packagist) Vendor— Affected 2.4.0 to before 2.7.13 Fixed in 2.7.13 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/symfony (Packagist) Vendor— Affected 2.8.0 to before 2.8.6 Fixed in 2.8.6 Patch available GHSA-whgv-8cg3-7hcm
  • symfony/symfony (Packagist) Vendor— Affected 3.0.0 to before 3.0.6 Fixed in 3.0.6 Patch available GHSA-whgv-8cg3-7hcm

CPE configurations NVD · 27

CPEVersionsRoleVendor
cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:*up to 2.3.40Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.0:*:*:*:*:*:*:*2.7.0Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.1:*:*:*:*:*:*:*2.7.1Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.2:*:*:*:*:*:*:*2.7.2Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.3:*:*:*:*:*:*:*2.7.3Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.4:*:*:*:*:*:*:*2.7.4Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.5:*:*:*:*:*:*:*2.7.5Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.6:*:*:*:*:*:*:*2.7.6Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.7:*:*:*:*:*:*:*2.7.7Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:*2.7.8Vulnerablesensiolabs
  • cpe:2.3:a:sensiolabs:symfony:*:*:*:*:*:*:*:* Versions up to 2.3.40 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.0:*:*:*:*:*:*:* Versions 2.7.0 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.1:*:*:*:*:*:*:* Versions 2.7.1 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.2:*:*:*:*:*:*:* Versions 2.7.2 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.3:*:*:*:*:*:*:* Versions 2.7.3 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.4:*:*:*:*:*:*:* Versions 2.7.4 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.5:*:*:*:*:*:*:* Versions 2.7.5 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.6:*:*:*:*:*:*:* Versions 2.7.6 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.7:*:*:*:*:*:*:* Versions 2.7.7 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.8:*:*:*:*:*:*:* Versions 2.7.8 Vulnerable ·sensiolabs
Show 17 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:sensiolabs:symfony:2.7.9:*:*:*:*:*:*:*2.7.9Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.10:*:*:*:*:*:*:*2.7.10Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.11:*:*:*:*:*:*:*2.7.11Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.7.12:*:*:*:*:*:*:*2.7.12Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.8.0:*:*:*:*:*:*:*2.8.0Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.8.1:*:*:*:*:*:*:*2.8.1Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.8.2:*:*:*:*:*:*:*2.8.2Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.8.3:*:*:*:*:*:*:*2.8.3Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.8.4:*:*:*:*:*:*:*2.8.4Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:2.8.5:*:*:*:*:*:*:*2.8.5Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:3.0.0:*:*:*:*:*:*:*3.0.0Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:3.0.1:*:*:*:*:*:*:*3.0.1Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:3.0.2:*:*:*:*:*:*:*3.0.2Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:3.0.3:*:*:*:*:*:*:*3.0.3Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:3.0.4:*:*:*:*:*:*:*3.0.4Vulnerablesensiolabs
cpe:2.3:a:sensiolabs:symfony:3.0.5:*:*:*:*:*:*:*3.0.5Vulnerablesensiolabs
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
  • cpe:2.3:a:sensiolabs:symfony:2.7.9:*:*:*:*:*:*:* Versions 2.7.9 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.10:*:*:*:*:*:*:* Versions 2.7.10 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.11:*:*:*:*:*:*:* Versions 2.7.11 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.7.12:*:*:*:*:*:*:* Versions 2.7.12 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.8.0:*:*:*:*:*:*:* Versions 2.8.0 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.8.1:*:*:*:*:*:*:* Versions 2.8.1 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.8.2:*:*:*:*:*:*:* Versions 2.8.2 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.8.3:*:*:*:*:*:*:* Versions 2.8.3 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.8.4:*:*:*:*:*:*:* Versions 2.8.4 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:2.8.5:*:*:*:*:*:*:* Versions 2.8.5 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:3.0.0:*:*:*:*:*:*:* Versions 3.0.0 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:3.0.1:*:*:*:*:*:*:* Versions 3.0.1 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:3.0.2:*:*:*:*:*:*:* Versions 3.0.2 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:3.0.3:*:*:*:*:*:*:* Versions 3.0.3 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:3.0.4:*:*:*:*:*:*:* Versions 3.0.4 Vulnerable ·sensiolabs
  • cpe:2.3:a:sensiolabs:symfony:3.0.5:*:*:*:*:*:*:* Versions 3.0.5 Vulnerable ·sensiolabs
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

  • Fix · GHSA-whgv-8cg3-7hcm symfony/security-http (Packagist) Fixed in 2.3.41 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security-http (Packagist) Fixed in 2.7.13 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security-http (Packagist) Fixed in 2.8.6 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security-http (Packagist) Fixed in 3.0.6 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security (Packagist) Fixed in 2.3.41 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security (Packagist) Fixed in 2.7.13 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security (Packagist) Fixed in 2.8.6 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/security (Packagist) Fixed in 3.0.6 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/symfony (Packagist) Fixed in 2.3.41 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/symfony (Packagist) Fixed in 2.7.13 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/symfony (Packagist) Fixed in 2.8.6 Advisory →
  • Fix · GHSA-whgv-8cg3-7hcm symfony/symfony (Packagist) Fixed in 3.0.6 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-4423
  2. 2026-10-03 Alias added: GHSA-whgv-8cg3-7hcm

References

Advisory 3

Other 6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences