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CVE-2026-55968: Apache Thrift: Node.js quadratic-time DoS in server receive transports

highCVSS 7.5CVE-2026-55968

CSIRTS triage

vendor: Apacheproduct: ThriftDenial of service
What
Quadratic-time denial-of-service vulnerability in Node.js Thrift server receive transports allowing slowdown via crafted input.
Who is affected
Node.js services using Apache Thrift RPC framework.
Urgency
High severity (CVSS 7.5) algorithmic DoS; unexoploited but easily triggered.
Action
Update Apache Thrift to version with quadratic complexity fix in Node.js receive transport.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.5
Published
2026-08-06
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55968

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-55968coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Apache Thrift

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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