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Vulnerability · Published Aug 27, 2026 · Assigned by vmware

CVE-2026-47893Spring Framework Request Headers Included in Exception Reasons in HandshakeWebsocketService

High 7.5

In plain English

A high-severity security flaw in Spring Framework from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.5%top 59.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A Spring WebFlux application that supports WebSocket connections may expose indirectly sensitive user information by including request headers in an exception reason. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12libspring-javano fix listedDEBIAN-CVE-2026-47893
Debian:13libspring-javano fix listedDEBIAN-CVE-2026-47893
Debian:14libspring-javano fix listedDEBIAN-CVE-2026-47893
Ubuntu:26.04:LTSlibspring-javano fix listedUBUNTU-CVE-2026-47893
Ubuntu:26.10libspring-javano fix listedUBUNTU-CVE-2026-47893

Affected products (as reported)

VendorProductVersions
Spring Spring Framework 7.0.0 – through 7.0.86.2.0 – through 6.2.196.1.0 – through 6.1.286.0.0 – through 6.0.305.3.0 – through 5.3.490 – through 5.2.25.RELEASE

Weakness: CWE-209 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References