CVE-2026-55970

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

6.9 MediumFix available

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.

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: Low
Integrity: None
Availability: Low

Exploit likelihood

0.78%Down 0.1 points since Jul 28, 2026

What each source reports

CVE List Score used 6.9

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

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.

Record: CVE-2026-55970
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-126
Updated: 2026-11-02

EUVDEUVD-2026-49154 6.9

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.

Record: EUVD-2026-49154
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-g7xp-pggm-c7w2 6.9

Buffer Over-read vulnerability in Apache Thrift C++ bindings. This issue affects Apache Thrift:...

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.

Record: GHSA-g7xp-pggm-c7w2
CVSS 4.0: 6.9 MediumCVSS: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
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness: CWE-126
Updated: 2026-11-02

NVD 6.9

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.

Record: CVE-2026-55970
CVSS 4.0: 6.9 MediumCVSS: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
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness: CWE-126
Updated: 2026-11-02

OSV 6.9

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

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.

Record: CVE-2026-55970
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness: CWE-126
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-55970 6.5

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.

Record: DEBIAN-CVE-2026-55970
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated: 2026-11-02

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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

OSVUBUNTU-CVE-2026-55970 6.9

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.

Record: UBUNTU-CVE-2026-55970
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated: 2026-11-02

OSVAZL-93986 No score

CVE-2026-55970 affecting package thrift for versions less than 0.24.0-1

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.

Record: AZL-93986
Updated: 2026-11-02

OSVBIT-thrift-2026-55970 No score

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

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.

Record: BIT-thrift-2026-55970
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: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

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Affected packages
Package	Affected	Fixed
`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
`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-2026-55970 is a medium vulnerability (CVSS 6.9) 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 0.78%, the 56th percentile. Fixed in thrift 0.24.0-1.

References

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