Security readout for executives and security teams
Plain-English summary
Certain Spring WebFlux applications may fail to enforce header-based routing checks during pre-flight requests. An unauthenticated network attacker could potentially bypass an intended authorization boundary, risking sensitive data, system changes, or disruption. Exposure requires a specific combination: affected Spring Framework versions, functional endpoints, and deployment with DispatcherServlet.
Executive priority
Treat as an immediate assessment and remediation priority for public-facing Java services. Direct teams to identify the required configuration combination first, then apply Spring-supported remediation. Escalate confirmed exposure where header predicates protect sensitive operations or data.
Technical view
CVE-2026-47892 is a CWE-863 authorization flaw affecting header predicates in pre-flight requests handled by WebFlux functional endpoints deployed with DispatcherServlet. Listed affected branches span Spring Framework 5.2.5.RELEASE through 7.0.8. The supplied CVSS 3.1 score is 9.8, reflecting unauthenticated, low-complexity network impact across confidentiality, integrity, and availability.
Likely exposure
Highest risk applies to internet-reachable applications combining an affected Spring version, WebFlux functional endpoints, DispatcherServlet deployment, and security-sensitive header predicates. Applications missing any required condition may be unaffected. The bundle does not establish how commonly this configuration occurs.
Exploitation context
The source bundle provides no evidence of active exploitation, and the CVE is not identified as being in KEV. However, the reported network reachability, lack of required privileges or user interaction, and low complexity make exposed deployments urgent to assess.
Researcher notes
The supplied record establishes affected version ranges and necessary deployment conditions but does not name fixed versions, technical root-cause details, proof-of-concept availability, or observed attacks. Default unaffected status suggests configurations outside the stated conditions should not be presumed vulnerable. Validate conclusions against the linked Spring advisory.
Mitigation direction
- Inventory Spring Framework versions across deployed and packaged applications.
- Identify applications combining WebFlux functional endpoints with DispatcherServlet.
- Follow the Spring advisory for supported fixed releases or vendor-approved remediation.
- Prioritize externally reachable applications using header predicates for security decisions.
- Restrict unnecessary external access while remediation is evaluated and deployed.
Validation and detection
- Confirm resolved Spring versions from build manifests, lockfiles, and packaged artifacts.
- Review deployment configuration for DispatcherServlet and WebFlux functional endpoints.
- Identify routes where header predicates influence authorization or sensitive processing.
- Test pre-flight handling in an authorized staging environment after remediation.
- Re-scan deployed artifacts to confirm affected versions are absent.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-47892 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://spring.io/security/cve-2026-47892CVE reference, vmware
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE mapping pending import
This CVE carries a CWE mapping that will resolve to a full Glexia CWE intelligence page after the official CWE import is complete.