CVE-2026-87743
HIGH 7.5 ALL-YEARSA 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.
Severe if exploited (CVSS 7.5), but no confirmed exploitation. Patch on a normal cadence.
Exploitation likelihood
0.5%chance of exploitation in 30 days · 43rd percentile
Impact if exploited
7.5CVSS 3.1 · HIGH · CNA
- ConfidentialityHigh
- IntegrityNone
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ✓Privileges: No account or privileges required
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept & exploit code
No public exploit or proof-of-concept code is catalogued for this CVE (no ExploitDB, Nuclei, or CISA-KEV entry). It may still exist — search GitHub or check the references below.
Affected
Products Red Hat Build Of Quarkus 3.27.5.Sp2 Red Hat Build Of Quarkus 3.33.3.Sp2 Exploit Intelligence Openshift Serverless Red Hat Build Of Apache Camel 4 For Quarkus 3 Red Hat Build Of Apicurio Registry 3 Red Hat Build Of Debezium 3 Red Hat Build Of Keycloak Red Hat Fuse 7 Red Hat Openshift Ai (Rhoai) Red Hat Openshift Dev Spaces
Weakness (CWE)
- CWE-551: Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
All CVSS metrics
- HIGH 7.5 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - HIGH 7.5 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N