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CVE-2026-48586: Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: TZlibTransport Decompression Size Limit

highCVSS 7.5CVE-2026-48586

CSIRTS triage

vendor: Apacheproduct: ThriftDenial of service
What
TZlibTransport decompression does not enforce a size limit, allowing excessive memory consumption.
Who is affected
Deployments using Apache Thrift's TZlibTransport for data decompression.
Urgency
Moderate; unexloited but could cause denial of service in production systems handling untrusted compressed data.
Action
Update to a patched Apache Thrift version that enforces decompression size limits.

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-2026-48586

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-2026-48586coverage & 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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