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9.8
CVE-2026-47890: Spring Framework SSE streams can become corrupted when rendering fragments
CVE-2026-47890 · published 7 days ago
Summary
If your web application uses Spring Framework version 6.2.0 through 6.2.19 or 7.0.0 through 7.0.8 and relies on Server‑Sent Events to push updates, the data stream may get mixed up when view fragments are rendered. This can cause clients to receive incorrect or incomplete information. Update to a newer Spring release that fixes the issue or disable the combination of SSE with fragment rendering until you can apply the patch.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Ubuntu:26.04:LTS | canonical | libspring-java | All versions |
| – | spring | spring framework | <= 7.0.8 |
| Ubuntu:Pro:14.04:LTS | canonical | libspring-java | All versions |
| Ubuntu:Pro:16.04:LTS | canonical | libspring-java | All versions |
| Ubuntu:Pro:18.04:LTS | canonical | libspring-java | All versions |
| Ubuntu:Pro:20.04:LTS | canonical | libspring-java | All versions |
| Ubuntu:Pro:22.04:LTS | canonical | libspring-java | All versions |
| Ubuntu:Pro:24.04:LTS | canonical | libspring-java | All versions |
Original advisory text
Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events (SSE) with view fragments.
Spring Framework 7.0.0 - 7.0.8
Spring Framework 6.2.0 - 6.2.19
Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events (SSE) with view fragments.
Spring Framework 7.0.0 - 7.0.8
Spring Framework 6.2.0 - 6.2.19
Spring Framework 7.0.0 - 7.0.8
Spring Framework 6.2.0 - 6.2.19
References
- https://spring.io/security/cve-2026-47890
- https://www.cve.org/CVERecord?id=CVE-2026-47890 Third Party Advisory
- https://ubuntu.com/security/CVE-2026-47890 Third Party Advisory
Severity
9.8
Critical
CVSS 3.1: 9.8 (OSV)
Exploitation
EPSS <1%
Type
CWE-93Improper Neutralization of CRLF Sequences ('CRLF Injection')
Timeline
Published27 Aug 2026
Updated2 Sep 2026
First seen27 Aug 2026
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