CVE-2025-66249: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache Livy.

Routine

MEDIUM 6.3WATCHLISTUPGRADE

CVE-2025-66249 is a medium-severity flaw (CVSS 6.3) affecting livy. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache Livy. This issue affects Apache Livy: from 0.3.0 before 0.9.0. The vulnerability can only be exploited with non-default Apache Livy Server settings. If the configuration value "livy.file.local-dir-whitelist" is set to a non-default value, the directory checking can be bypassed. Users are recommended to upgrade to version 0.9.0, which fixes th

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-03-13
Last modified	2026-06-17

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

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-13 19:53 UTCPublished CVE record published
2026-06-17 09:56 UTCUpdated Record last modified

apache livy UPGRADE

Affected: >= 0.3.0 and < 0.9.0

Fixed in: 0.9.0

Safe to downgrade to: a release before 0.3.0

1. Check installed version

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

2. UPGRADE to 0.9.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade livy

Note

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

3. If no update is available yet, DOWNGRADE to a release before 0.3.0 (Debian / Ubuntu)

apt-cache madison livy sudo apt install livy=<VERSION_BEFORE_0.3.0> sudo apt-mark hold livy

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list livy sudo dnf downgrade livy-<VERSION_BEFORE_0.3.0> sudo dnf versionlock add livy

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2025-66249?

livy: upgrade to 0.9.0. Exact commands for each OS are on this page.

Is CVE-2025-66249 being exploited?

CVE-2025-66249 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-2025-66249 affect?

CVE-2025-66249 affects livy. Severity is medium (CVSS 6.3). Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in Apache Livy. This issue affects Apache Livy: from 0.3.0 before 0.9.0. The vulnerability can only be exploited with non-default Apache Livy Ser

How urgent is CVE-2025-66249?

Priority 39/100. On your watchlist

Related CVEs

CVE-2025-60012 MEDIUM 6.3 UPGRADE Malicious configuration can lead to unauthorized file access in Apache Livy. This issue affects Apache Livy 0

References

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