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Vulnerabilities / CVE-2016-2403

critical

CVE-2016-2403

Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to b ...

Published Modified CWE 287
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA.

Description

Symfony before 2.8.6 and 3.x before 3.0.6 allows remote attackers to bypass authentication by logging in with an empty password and valid username, which triggers an unauthenticated bind.

Affected packages and fixed versions

SourcePackageFixed in
composer::GitHub Security Advisory Composersymfony/security, symfony/security-core, symfony/symfony2.8.6, 3.0.6
composer::PHP Security Advisories Databasesymfony/security, symfony/security-core, symfony/symfonyno fix listed
debian 11symfony2.8.6+dfsg-1
debian 12symfony2.8.6+dfsg-1
debian 13symfony2.8.6+dfsg-1
debian 14symfony2.8.6+dfsg-1
debian 9symfony2.8.7+dfsg-1.3+deb9u1
echosymfony2.8.6+dfsg-1
Show all 12 entries from 8 sources
SourcePackageFixed in
composer::GitHub Security Advisory Composersymfony/security2.8.6, 3.0.6
composer::GitHub Security Advisory Composersymfony/security-core2.8.6, 3.0.6
composer::GitHub Security Advisory Composersymfony/symfony2.8.6, 3.0.6
composer::PHP Security Advisories Databasesymfony/securityno fix listed
composer::PHP Security Advisories Databasesymfony/security-coreno fix listed
composer::PHP Security Advisories Databasesymfony/symfonyno fix listed
debian 11symfony2.8.6+dfsg-1
debian 12symfony2.8.6+dfsg-1
debian 13symfony2.8.6+dfsg-1
debian 14symfony2.8.6+dfsg-1
debian 9symfony2.8.7+dfsg-1.3+deb9u1
echosymfony2.8.6+dfsg-1

References

All 9 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.