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Fencer Vulns
high 7.5

CVE-2026-41608 json

Apache Thrift: Unbounded Zlib Decompression in Python THeaderTransport

published 2026-07-27 3 mo ago modified 2026-10-24 16 d ago also BIT-thrift-2026-41608 , EUVD-2026-49145 , GHSA-6pjx-3pjc-mrj8 , PYSEC-2026-3925

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
0
none known

Summary

Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Apache Thrift Python bindings.

This issue affects Apache Thrift: before 0.24.0.

Users are recommended to upgrade to version 0.24.0, which fixes the issue.

Patch / fix

  • pypi thrift 0.24.0
  • bitnami thrift 0.24.0
  • Apache Software Foundation Apache Thrift 0.24.0
  • thrift Debian 14 0.24.0-2

debian advisories DEBIAN-CVE-2026-41608

  • thrift hummingbird 1 0.24.0-0.1.hum1
  • thrift-qt hummingbird 1 0.24.0-0.1.hum1
  • perl-thrift hummingbird 1 0.24.0-0.1.hum1
  • thrift-glib hummingbird 1 0.24.0-0.1.hum1
  • python3-thrift hummingbird 1 0.24.0-0.1.hum1

red hat advisories RHSA-2026:49837

  • thrift openSUSE Tumbleweed 0.24.0-1.1

opensuse advisories openSUSE-SU-2026:11432-1

  • thrift Azure Linux 3.0 0.24.0-1

azure linux advisories AZL-93989

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-41608 updated cvss 7.5

thrift: Apache Thrift Python bindings: Denial of Service via data amplification

  • Red Hat Hardened Images thrift 0.24.0-0.1.hum1, perl-thrift 0.24.0-0.1.hum1, python3-thrift 0.24.0-0.1.hum1
    fixed: vendor fix RHSA-2026:49837
  • Red Hat Confidential Compute Attestation openshift-sandboxed-containers/osc-podvm-payload-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 thrift 0.15.0-4.el9ai Red Hat OpenShift Container Platform 4 conmon-rs, kata-containers Red Hat OpenShift Update Service openshift-update-service/openshift-update-service-rhel8
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi thrift
<0.24.0
0.24.0
bitnami thrift
<0.24.0
0.24.0

Affected products

  • Apache Software Foundation Apache Thrift

Classification

Weakness
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.