Resource exhaustion in turbo-stream - CVE-2026-34077

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Main Vulnerability Database Vulnerabilities #VU134922

Resource exhaustion in turbo-stream - CVE-2026-34077

Published: June 19, 2026


Vulnerability identifier: #VU134922
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-34077
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in the single-fetch serialization algorithm when encoding specific types of data into server responses. A remote attacker can supply crafted input that is reflected into a server response to cause a denial of service.

Only React Router v7 framework mode and Remix with single fetch enabled are vulnerable.


Affected software

turbo-stream
React Router
Jira Service Management Data Center
Jira Software Data Center
IBM SPSS Collaboration and Deployment Services
JBoss Data Grid

How to mitigate CVE-2026-34077

Install security update from vendor's website.

turbo-stream - update to 3.0.0
React Router - update to 7.14.0
Jira Service Management Data Center - update to 10.3.14
Jira Software Data Center - update to 10.3.14
JBoss Data Grid - update to 8.6.2
IBM SPSS Collaboration and Deployment Services - update to 9.0.0.0.0 IF13

External References

Related Security Bulletins