CVE-2026-47892Network attack vector

Authorization bypass via pre-flight header predicates

Published Aug 27, 2026 · Updated Aug 27, 2026

Incorrect authorization in Spring Framework WebFlux allows remote attackers to bypass header predicates using crafted pre-flight requests. The issue affects functional endpoint routing under DispatcherServlet, but Spring has not disclosed which predicate-evaluation operation mishandles the request. Exploitation requires a WebFlux functional endpoint deployed with DispatcherServlet; successful requests route past a configured header condition.

CVSS severityUnavailable
Unscored
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Incorrect authorization in Spring Framework WebFlux allows remote attackers to bypass header predicates using crafted pre-flight requests. The issue affects functional endpoint routing under DispatcherServlet, but Spring has not disclosed which predicate-evaluation operation mishandles the request. Exploitation requires a WebFlux functional endpoint deployed with DispatcherServlet; successful requests route past a configured header condition.

The record

CVE
CVE-2026-47892
Published
Aug 27, 2026
Updated
Aug 27, 2026
Vendor
Spring
Product
Spring Framework
Classifications
CWE-863, T1190
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.2.5.RELEASE <=5.2.25.RELEASE
  2. Affected versionversion=5.3.0 <=5.3.49
  3. Affected versionversion=6.0.0 <=6.0.30
  4. Affected versionversion=6.1.0 <=6.1.28
  5. Affected versionversion=6.2.0 <=6.2.19
  6. Affected versionversion=7.0.0 <=7.0.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Spring · Spring Frameworkversion=5.2.5.RELEASE <=5.2.25.RELEASE; version=5.3.0 <=5.3.49; version=6.0.0 <=6.0.30; version=6.1.0 <=6.1.28; version=6.2.0 <=6.2.19; version=7.0.0 <=7.0.8

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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