CVE-2026-66053: Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift Python bindings. This is

Routine

MEDIUM 5.9REMOTEWATCHLISTUPGRADE

CVE-2026-66053 is a medium-severity flaw (CVSS 5.9) affecting thrift. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Validation of Certificate with Host Mismatch 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. This replaces CVE-2026-41603

Why this priority

Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.9 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-297
Published	2026-07-27
Last modified	2026-10-24

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-27 12:16 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

apache thrift UPGRADE

Affected: < 0.24.0

Fixed in: 0.24.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy thrift || rpm -q thrift || thrift --version

2. UPGRADE to 0.24.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade thrift

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade thrift

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Python (pip) · thrift · FIXED · 0.24.0 · vulnerable: < 0.24.0 · source

pip install --upgrade "thrift>=0.24.0" pip show thrift

Fedora 46 · sugar-toolkit-gtk3 · FIXED · 0.122-2.fc46 · FEDORA-2026-d11eb2faf0 · source

sudo dnf upgrade --advisory=FEDORA-2026-d11eb2faf0

Fedora ELN · ntpd-rs · FIXED · 1.7.2-3.eln159 · FEDORA-2026-57e4a99310 · source

sudo dnf upgrade --advisory=FEDORA-2026-57e4a99310

Debian 12 · thrift · NO FIX YET

Debian 13 · thrift · NO FIX YET

RHEL AI (RHEL AI) 3 · thrift · DEFERRED

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-66053?

thrift: upgrade to 0.24.0. Exact commands for each OS are on this page.

Is CVE-2026-66053 being exploited?

CVE-2026-66053 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-66053 affect?

CVE-2026-66053 affects thrift. Severity is medium (CVSS 5.9). Improper Validation of Certificate with Host Mismatch 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. This replac

How urgent is CVE-2026-66053?

Priority 36/100. Remotely exploitable, no login, no user action; On your watchlist

Software pages

Python vulnerabilities

Related CVEs

CVE-2026-55971 CRITICAL 9.8 UPGRADE Heap-based Buffer Overflow vulnerability in Apache Thrift C++ bindings. This issue affects Apache Thrift: bef
CVE-2026-58023 CRITICAL 9.1 UPGRADE Out-of-bounds Read vulnerability in Apache Thrift c_glib bindings. This issue affects Apache Thrift: before 0
CVE-2026-58662 CRITICAL 9.1 UPGRADE Improper Validation of Specified Quantity in Input, Out-of-bounds Read vulnerability in Apache Thrift C++ bind
CVE-2026-41608 HIGH 7.5 UPGRADE Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Apache Thrift Python binding
CVE-2026-43871 HIGH 7.5 UPGRADE Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in Apache Thrift Python, Go, PHP and Java

References

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