CVE-2026-43869: Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apac

Q: How do I fix CVE-2026-43869?

thrift: upgrade to 0.23.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-43869 being exploited?

CVE-2026-43869 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-43869 affect?

CVE-2026-43869 affects thrift. Severity is high (CVSS 7.3). Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

Q: How urgent is CVE-2026-43869?

Priority 48/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.3REMOTEWATCHLISTUPGRADE

CVE-2026-43869 is a high-severity flaw (CVSS 7.3) 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. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-297, CWE-295
Published	2026-05-05
Last modified	2026-10-26

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

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-05 08:16 UTCPublished CVE record published
2026-10-26 19:10 UTCUpdated Record last modified

apache thrift UPGRADE

Affected: < 0.23.0

Fixed in: 0.23.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.23.0 (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.

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-2026-43869?

thrift: upgrade to 0.23.0. Exact commands for each OS are on this page.

Is CVE-2026-43869 being exploited?

CVE-2026-43869 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-2026-43869 affect?

CVE-2026-43869 affects thrift. Severity is high (CVSS 7.3). Improper Validation of Certificate with Host Mismatch vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

How urgent is CVE-2026-43869?

Priority 48/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

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References

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