CVE-2026-59313: Spring MVC applications using the functional web framework are vulnerable to stream corruption when using Serv

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CRITICAL 9.8REMOTEUPGRADE

CVE-2026-59313 is a critical-severity flaw (CVSS 9.8) affecting spring framework. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-93
Published	2026-08-27
Last modified	2026-08-31

Publisher (CNA): VMware · Vendor: vmware

Last updated 2026-08-31 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-27 20:17 UTCPublished CVE record published
2026-08-31 18:04 UTCUpdated Record last modified

vmware spring framework UPGRADE

Affected: >= 5.3.0 and <= 5.3.49 · >= 6.0.0 and <= 6.0.30 · >= 6.1.0 and <= 6.1.28 · >= 6.2.0 and <= 6.2.19 · >= 7.0.0 and <= 7.0.8

Fixed in: newer than 7.0.8

Safe to downgrade to: a release before 5.3.0

1. Check installed version

apt-cache policy spring-framework || rpm -q spring-framework || spring-framework --version

2. UPGRADE to newer than 7.0.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade spring-framework

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spring-framework

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.3.0 (Debian / Ubuntu)

apt-cache madison spring-framework sudo apt install spring-framework=<VERSION_BEFORE_5.3.0> sudo apt-mark hold spring-framework

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list spring-framework sudo dnf downgrade spring-framework-<VERSION_BEFORE_5.3.0> sudo dnf versionlock add spring-framework

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-59313?

spring framework: upgrade to newer than 7.0.8. Exact commands for each OS are on this page.

Is CVE-2026-59313 being exploited?

CVE-2026-59313 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-59313 affect?

CVE-2026-59313 affects spring framework. Severity is critical (CVSS 9.8). 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 Framew

How urgent is CVE-2026-59313?

Priority 51/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Spring Framework vulnerabilities · VMware vulnerabilities

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References

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