Security readout for executives and security teams
Plain-English summary
A flaw can corrupt live Server-Sent Event streams when affected Spring applications render view fragments. The supplied CVSS assessment indicates an unauthenticated network attacker may compromise confidentiality, integrity, and availability without user interaction. Exposure depends on using this specific feature combination.
Executive priority
Treat as an urgent remediation item where the affected feature combination is externally reachable. Rapidly inventory deployments, confirm actual feature usage, and follow Spring’s advisory. Systems without SSE view-fragment rendering have lower apparent exposure based on the supplied evidence.
Technical view
CVE-2026-47890 affects Spring MVC and WebFlux applications using SSE with view fragments. Listed affected releases are Spring Framework 7.0.0–7.0.8 and 6.2.0–6.2.19. It is classified as CWE-93 and scored CVSS 3.1 9.8 with network access, low complexity, and no required privileges or interaction.
Likely exposure
Highest concern applies to network-accessible Spring MVC or WebFlux endpoints that combine SSE with view-fragment rendering on listed versions. Applications outside those version ranges, or not using that feature combination, are not identified as vulnerable by the supplied description.
Exploitation context
The CVSS vector describes remote, low-complexity, unauthenticated exploitation without user interaction. However, the bundle contains no exploit evidence, and the CVE is not listed as KEV. Active exploitation therefore is not established.
Researcher notes
The bundle does not explain the precise corruption mechanism, attacker-controlled input path, observable indicators, fixed releases, or official workarounds. Avoid assuming every Spring application is exploitable. Validation should establish the deployed dependency version and confirm that SSE and view-fragment rendering intersect on reachable routes.
Mitigation direction
- Review the Spring advisory for vendor-designated fixed versions and official mitigations.
- Upgrade affected deployments only to a version the vendor identifies as fixed.
- Prioritize externally accessible SSE endpoints that render view fragments.
- Restrict access to affected endpoints until remediation if immediate upgrading is impossible.
Validation and detection
- Confirm resolved Spring Framework versions in build artifacts and deployed applications.
- Identify MVC and WebFlux routes combining SSE responses with view fragments.
- Verify upgraded deployments no longer resolve versions 7.0.0–7.0.8 or 6.2.0–6.2.19.
- Regression-test affected event streams for corruption using safe, authorized test inputs.
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-93: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2026-47890 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-2026-47890CVE 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.
Improper Neutralization of CRLF Sequences
Improper Neutralization of CRLF Sequences represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.