CVE-2026-55971

Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()

9.3 CriticalFix available

Heap-based Buffer Overflow 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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.98%Down 0.1 points since Jul 28, 2026

What each source reports

CVE List Score used 9.3

Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()

Heap-based Buffer Overflow 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.

Record: CVE-2026-55971
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-122
Updated: 2026-11-02

EUVDEUVD-2026-49155 9.3

Heap-based Buffer Overflow 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.

Record: EUVD-2026-49155
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-gwj4-q93m-wwqc 9.3

Heap-based Buffer Overflow vulnerability in Apache Thrift C++ bindings. This issue affects...

Heap-based Buffer Overflow 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.

Record: GHSA-gwj4-q93m-wwqc
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/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
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-122
Updated: 2026-11-02

NVD 9.3

Heap-based Buffer Overflow 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.

Record: CVE-2026-55971
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/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
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-122
Updated: 2026-11-02

OSV 9.3

Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()

Heap-based Buffer Overflow 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.

Record: CVE-2026-55971
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness: CWE-122
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-55971 9.8

Heap-based Buffer Overflow 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.

Record: DEBIAN-CVE-2026-55971
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

Show 8 moreShow less

OSVRHSA-2026:49715 8.4

Red Hat Security Advisory: RHEL AI 3.5 RPM runtime CVE fix - thrift

Record: RHSA-2026:49715
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVRHSA-2026:49716 8.4

Red Hat Security Advisory: RHEL AI 3.4 RPM runtime CVE fix - thrift

Record: RHSA-2026:49716
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVRHSA-2026:49837 8.4

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record: RHSA-2026:49837
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVRHSA-2026:51358 8.4

Red Hat Security Advisory: RHEL AI 3.6 RPM runtime CVE fix - thrift

Record: RHSA-2026:51358
CVSS 3.1: 8.4 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-55971 9.3

Heap-based Buffer Overflow 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.

Record: UBUNTU-CVE-2026-55971
CVSS 4.0: 9.3 CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVAZL-94007 No score

CVE-2026-55971 affecting package thrift for versions less than 0.24.0-1

Heap-based Buffer Overflow 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.

Record: AZL-94007
Updated: 2026-11-02

OSVBIT-thrift-2026-55971 No score

Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()

Heap-based Buffer Overflow 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.

Record: BIT-thrift-2026-55971
Updated: 2026-11-02

OSVopenSUSE-SU-2026:11432-1 No score

libthrift-0_24_0-0.24.0-1.1 on GA media

These are all security issues fixed in the libthrift-0_24_0-0.24.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2026:11432-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`thrift` Azure Linux:3	before 0.24.0-1	0.24.0-1
`thrift` Bitnami	before 0.24.0	0.24.0
`thrift` Debian:12	All versions, plus listed versions 0.17.0-20.17.0-30.17.0-40.18.1-10.18.1-2 Show 17 moreShow less 0.19.0-10.19.0-20.19.0-2.10.19.0-2.1~exp10.19.0-30.19.0-40.20.0-10.22.0-10.22.0-20.22.0-30.22.0-40.23.0-10.23.0-20.23.0-30.24.0-10.24.0-20.24.0-3	None known
`thrift` Debian:13	All versions, plus listed versions 0.19.0-40.20.0-10.22.0-10.22.0-20.22.0-3 Show 7 moreShow less 0.22.0-40.23.0-10.23.0-20.23.0-30.24.0-10.24.0-20.24.0-3	None known
`thrift` Debian:14	before 0.24.0-2, plus listed versions 0.19.0-40.20.0-10.22.0-10.22.0-20.22.0-3 Show 5 moreShow less 0.22.0-40.23.0-10.23.0-20.23.0-30.24.0-1	0.24.0-2
`perl-thrift` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`python3-thrift` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`python3-thrift-debuginfo` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-debuginfo` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai

Show 43 moreShow less

Affected packages
Package	Affected	Fixed
`thrift-debugsource` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-devel` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-devel-debuginfo` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-glib` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-glib-debuginfo` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-qt` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-qt-debuginfo` Red Hat:enterprise_linux_ai:3.5::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`perl-thrift` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`python3-thrift` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`python3-thrift-debuginfo` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-debuginfo` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-debugsource` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-devel` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-devel-debuginfo` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-glib` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-glib-debuginfo` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-qt` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`thrift-qt-debuginfo` Red Hat:enterprise_linux_ai:3.4::el9	before 0:0.24.0-1.el9ai	0:0.24.0-1.el9ai
`perl-thrift` Red Hat:hummingbird:1 From an advisory covering 9 CVEs	before 0:0.24.0-0.1.hum1	0:0.24.0-0.1.hum1
`python3-thrift` Red Hat:hummingbird:1 From an advisory covering 9 CVEs	before 0:0.24.0-0.1.hum1	0:0.24.0-0.1.hum1
`thrift` Red Hat:hummingbird:1 From an advisory covering 9 CVEs	before 0:0.24.0-0.1.hum1	0:0.24.0-0.1.hum1
`thrift-devel` Red Hat:hummingbird:1 From an advisory covering 9 CVEs	before 0:0.24.0-0.1.hum1	0:0.24.0-0.1.hum1
`thrift-glib` Red Hat:hummingbird:1 From an advisory covering 9 CVEs	before 0:0.24.0-0.1.hum1	0:0.24.0-0.1.hum1
`thrift-qt` Red Hat:hummingbird:1 From an advisory covering 9 CVEs	before 0:0.24.0-0.1.hum1	0:0.24.0-0.1.hum1
`perl-thrift` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`python3-thrift` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`python3-thrift-debuginfo` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-debuginfo` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-debugsource` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-devel` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-devel-debuginfo` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-glib` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-glib-debuginfo` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-qt` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift-qt-debuginfo` Red Hat:enterprise_linux_ai:3.6::el9	before 0:0.24.0-2.el9ai	0:0.24.0-2.el9ai
`thrift` Ubuntu:20.04:LTS	All versions, plus listed versions 0.11.0-60.13.0-2build10.13.0-2build2	None known
`thrift` Ubuntu:22.04:LTS	All versions, plus listed versions 0.13.0-6ubuntu10.13.0-6ubuntu20.13.0-6ubuntu30.13.0-70.16.0-2	None known
`thrift` Ubuntu:24.04:LTS	All versions, plus listed versions 0.17.0-40.19.0-20.19.0-2build10.19.0-2.1build40.19.0-2.1build5	None known
`thrift` Ubuntu:26.10	All versions, plus listed versions 0.22.0-3ubuntu10.23.0-30.23.0-3ubuntu1	None known
`thrift` Ubuntu:26.04:LTS	All versions, plus listed versions 0.19.0-4build10.22.0-30.22.0-3ubuntu1	None known
`thrift` openSUSE:Tumbleweed From an advisory covering 14 CVEs	before 0.24.0-1.1	0.24.0-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-55971 is a critical vulnerability (CVSS 9.3) in Apache Thrift, published July 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.98%, the 62nd percentile. Fixed in thrift 0.24.0-1.

References

Show 79 moreShow less