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Fencer Vulns
critical 9.2

CVE-2026-91135 json

Apache Thrift: C++ `THeaderTransport::transform()` heap buffer overflow (write direction)

published 2026-10-02 38 d ago modified 2026-10-09 31 d ago also BIT-thrift-2026-91135 , EUVD-2026-91374

cvss
9.2
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport.

When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the transform buffer.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue.

Patch / fix

  • bitnami thrift 0.25.0
  • Apache Software Foundation Apache Thrift 0.25.0
  • thrift openSUSE Tumbleweed 0.25.0-1.1

opensuse advisories openSUSE-SU-2026:12051-1

  • thrift Azure Linux 3.0 0.25.0-1

azure linux advisories AZL-105425

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-2026-91135 updated cvss 7.0

thrift: Apache Thrift: Arbitrary code execution via heap-based buffer overflow during frame compression

  • Red Hat Ansible Automation Orchestrator 2026 ansible-automation-platform/automation-orchestrator-temporal-rhel9 Red Hat Lightspeed Core lightspeed-core/lightspeed-stack-rhel9
    affected: workaround, no fix available
  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/logging-loki-rhel9
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Ceph Storage 5 rhceph/snmp-notifier-rhel8 Red Hat Ceph Storage 6 rhceph/snmp-notifier-rhel9, rhceph/rhceph-6-dashboard-rhel9 Red Hat Ceph Storage 7 thrift, rhceph/grafana-rhel9, rhceph/snmp-notifier-rhel9 Red Hat Ceph Storage 8 thrift, thrift-qt, perl-thrift, thrift-glib, python3-thrift, rhceph/grafana-rhel9, +1 more Red Hat Ceph Storage 9 thrift, libarrow, parquet-libs, rhceph/alloy-rhel10, rhceph/grafana-rhel10, rhceph/snmp-notifier-rhel10
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux 9 opentelemetry-collector, opentelemetry-collector 0.158.0-1.el10_2 Red Hat Enterprise Linux 10 opentelemetry-collector 0.158.0-1.el10_2
    affected: workaround, no fix available
  • Red Hat Cryostat 4 on RHEL 9 cryostat/cryostat-storage-rhel9 4.2.0-28
    fixed: vendor fix RHSA-2026:95360
  • Red Hat Confidential Compute Attestation openshift-sandboxed-containers/osc-podvm-payload-rhel9 Red Hat Cryostat 4 on RHEL 9 cryostat/cryostat-rhel9 4.2.0-18, cryostat/cryostat-db-rhel9 4.2.0-29, cryostat/jfr-datasource-rhel9 4.2.0-19, cryostat/cryostat-reports-rhel9 4.2.0-19, cryostat/cryostat-rhel9-operator 4.2.0-29, cryostat/cryostat-operator-bundle 4.2.0-15, +3 more Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-grafana-rhel9 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/acm-grafana-rhel9 Red Hat AI Inference Server rhaiis/vllm-cpu-rhel9, rhaiis/vllm-tpu-rhel9 Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more
    +2 more products
    Red Hat Enterprise Linux 9 grafana, grafana-selinux Red Hat Enterprise Linux 10 grafana
    not affected: vulnerable code not present
  • Red Hat Hardened Images thrift, jaeger 2.21.0-0.1.hum1, loki3.7 3.7.8-0.3.hum1, tempo3.0 3.0.3-0.4.hum1, tempo2.10 2.10.8-0.4.hum1, grafana13.1 13.1.7-0.1.hum1, +5 more
    not affected: component not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-feature-server-rhel9, rhoai/odh-model-registry-rhel9 Red Hat OpenShift Container Platform 4 conmon-rs, kata-containers, openshift4/cnf-tests-rhel8, openshift4/oc-mirror-plugin-rhel9, openshift4/ztp-site-generate-rhel8 Red Hat OpenShift Container Platform 5 conmon-rs, kata-containers Red Hat OpenShift distributed tracing 3 rhosdt/tempo-rhel9, rhosdt/tempo-query-rhel9, rhosdt/tempo-jaeger-query-rhel9, rhosdt/opentelemetry-collector-rhel9 Red Hat OpenShift Update Service openshift-update-service/openshift-update-service-rhel8 Red Hat OpenStack Platform 18.0 rhoso-operators/openstack-operator-bundle
    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
no
Technical impact
total
Assessed
37 d ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 9.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 9.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/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

Affected packages

ecosystem package affected fixed in
bitnami thrift
<0.25.0
0.25.0

Affected products

  • Apache Software Foundation Apache Thrift

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

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: Added CPE configurations because not yet analyzed by NVD.