CVE-2026-87743

A flaw was found in Quarkus HTTP security. An unauthenticated attacker can exploit a discrepancy in how paths are normalized between the security matcher and HTTP request dispatchers. This allows the attacker to craft a URL that the security matcher considers public, but which is then routed to a protected endpoint, leading to an authorization bypass and potential unauthorized access to sensitive information.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-25)

CWE

CWE-551

Published

2026-09-18

Modified

2026-10-09

Record from

the NVD, synced 2026-10-19

References

• https://access.redhat.com/errata/RHSA-2026:69440
• https://access.redhat.com/errata/RHSA-2026:69470
• https://access.redhat.com/security/cve/CVE-2026-87743
• https://bugzilla.redhat.com/show_bug.cgi?id=2530523

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