CVE-2026-48489
Auth bypass via _failure_path in Symfony allowing unauthorized subrequest dispatch.
Is CVE-2026-48489 being exploited?
Not confirmed. CVE-2026-48489 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.60% probability of exploitation in the next 30 days.
How severe is CVE-2026-48489?
CVE-2026-48489 is rated High with a CVSS score of 8.7. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-48489?
Yes. A fix has been recorded for CVE-2026-48489. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-48489 affect?
CVE-2026-48489 affects Symfony Security (DefaultAuthenticationFailureHandler), Symfony < 5.4.53, Symfony < 6.4.41, Symfony < 7.4.13, and 2 further products or versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-48489?
Upgrade to 5.4.53/6.4.41/7.4.13/8.0.13 and validate/fix _failure_path handling.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attacker can dispatch subrequests to access_control-protected GET routes, bypassing firewall listeners and accessing protected resources.
Immediate action required
- affected< 5.4.53
- affected>= 6.0.0-BETA1 and < 6.4.41
- affected>= 7.0.0-BETA1 and < 7.4.13
- affected>= 8.0.0-BETA1 and < 8.0.13
- affected< 5.4.53
- affected>= 6.0.0-BETA1 and < 6.4.41
- affected>= 7.0.0-BETA1 and < 7.4.13
- affected>= 8.0.0-BETA1 and < 8.0.13
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.