Skip to content
Fencer Vulns
medium 6.5

CVE-2026-55970 json

Apache Thrift: C++ heap out-of-bounds read in THeaderTransport::readHeaderFormat()

published 2026-07-27 3 mo ago modified 2026-10-24 16 d ago also BIT-thrift-2026-55970 , EUVD-2026-49154

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

Buffer Over-read vulnerability in Apache Thrift C++ 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

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

debian advisories DEBIAN-CVE-2026-55970

  • 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-93986

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-2026-55970 updated cvss 6.5

thrift: Apache Thrift C++ bindings: Information disclosure due to buffer over-read vulnerability

  • Red Hat Confidential Compute Attestation openshift-sandboxed-containers/osc-podvm-payload-rhel9 Red Hat AI Inference Server rhaii/vllm-cpu-rhel9, rhaii/vllm-tpu-rhel9, rhaii/vllm-cuda-rhel9, rhaii/vllm-rocm-rhel9, rhaiis/vllm-cpu-rhel9, rhaiis/vllm-tpu-rhel9, +9 more Red Hat OpenShift AI (RHOAI) rhoai/odh-automl-rhel9, rhoai/odh-autorag-rhel9, rhoai/odh-mlserver-rhel9, rhai/base-image-cpu-rhel9, rhai/base-image-tpu-rhel9, rhai/base-image-gaudi-rhel9, +23 more Red Hat OpenShift Container Platform 4 conmon-rs, kata-containers Red Hat OpenShift Container Platform 5 kata-containers Red Hat OpenShift Update Service openshift-update-service/openshift-update-service-rhel8
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux AI 3.3 for RHEL 9 thrift 0.15.0-6.el9ai, thrift 0.15.0-7.el9ai, thrift-qt 0.15.0-6.el9ai, thrift-qt 0.15.0-7.el9ai, perl-thrift 0.15.0-6.el9ai, perl-thrift 0.15.0-7.el9ai, +4 more
    fixed: vendor fix RHSA-2026:52831
  • Red Hat Enterprise Linux AI 3.4 for RHEL 9 thrift 0.15.0-6.el9ai, thrift 0.15.0-7.el9ai, thrift-qt 0.15.0-6.el9ai, thrift-qt 0.15.0-7.el9ai, perl-thrift 0.15.0-6.el9ai, perl-thrift 0.15.0-7.el9ai, +4 more
    fixed: vendor fix RHSA-2026:52829
  • Red Hat Hardened Images thrift 0.24.0-0.1.hum1, thrift-qt 0.24.0-0.1.hum1, perl-thrift 0.24.0-0.1.hum1, thrift-glib 0.24.0-0.1.hum1, python3-thrift 0.24.0-0.1.hum1
    fixed: vendor fix RHSA-2026:49837

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

0.78% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected packages

ecosystem package affected fixed in
bitnami thrift
<0.24.0
0.24.0

Affected products

  • Apache Software Foundation Apache Thrift

Classification

Weakness

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Denote that it is specifically the C++ client affected in this case.