Monitor vulnerabilities like this one. Sign up free to get alerted when software you use is affected.
9.8

Spring MVC can corrupt data in server‑sent event streams

CVE-2026-59313 · published 7 days ago
Summary

Web applications built with Spring MVC’s functional framework may corrupt the data sent to browsers when using Server‑Sent Events. This can cause incomplete or garbled updates for users watching live feeds. Update to a newer Spring Framework release that includes the fix, or disable the affected feature until you can upgrade.

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 VendorProductAffected versions
Debian:11 debian libspring-java All versions
Debian:12 debian libspring-java All versions
Debian:13 debian libspring-java All versions
Debian:14 debian libspring-java All versions
Original advisory text
Spring MVC applications using the functional web framework are vulnerable to stream corruption when using Server-Sent Events (SSE). Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Sp...
Spring MVC applications using the functional web framework are vulnerable to stream corruption when using Server-Sent Events (SSE).
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
References
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
Sources
CVE-2026-59313 · NVD
DEBIAN-CVE-2026-59313 · OSV
Monitor software like this
Free during beta