CVE-2026-43870: Origin Validation Error, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Impro

Q: How do I fix CVE-2026-43870?

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

Q: Is CVE-2026-43870 being exploited?

CVE-2026-43870 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-2026-43870 affect?

CVE-2026-43870 affects thrift. Severity is high (CVSS 7.3). Origin Validation Error, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'), Uncontrolled Resource Consumption vulner

Q: How urgent is CVE-2026-43870?

Priority 43/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

This month

HIGH 7.3REMOTEWATCHLISTUPGRADE

CVE-2026-43870 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.

Origin Validation Error, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'), Uncontrolled Resource Consumption 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	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-22, CWE-113, CWE-346, CWE-400
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 09:16 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-2026-43870?

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

Is CVE-2026-43870 being exploited?

CVE-2026-43870 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-2026-43870 affect?

CVE-2026-43870 affects thrift. Severity is high (CVSS 7.3). Origin Validation Error, Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting'), Uncontrolled Resource Consumption vulner

How urgent is CVE-2026-43870?

Priority 43/100. High severity; Remotely exploitable, no login, no user action; On your watchlist

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References

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