CVE-2025-66249Network attack vector

Authenticated local-file access via unnormalized path check

Published Mar 13, 2026 · Updated Mar 13, 2026

Path traversal in Apache Livy 0.3.0 through 0.8.0 allows remote authenticated users to access unauthorized local files via job requests. Session.resolveURI checks an unnormalized request path against livy.file.local-dir-whitelist with a prefix comparison, so ../ segments pass before resolving outside an allowed directory. Exploitation requires a non-default whitelist value and low-privileged access to the network-facing Livy server; resulting file access can affect confidentiality, integrity, and availability.

CVSS severity6.3
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Apache Livy 0.3.0 through 0.8.0 allows remote authenticated users to access unauthorized local files via job requests. Session.resolveURI checks an unnormalized request path against livy.file.local-dir-whitelist with a prefix comparison, so ../ segments pass before resolving outside an allowed directory. Exploitation requires a non-default whitelist value and low-privileged access to the network-facing Livy server; resulting file access can affect confidentiality, integrity, and availability.

The record

CVE
CVE-2025-66249
Published
Mar 13, 2026
Updated
Mar 13, 2026
Vendor
The Apache Software Foundation
Product
Apache Livy
Classifications
CWE-22, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.3.0-incubating <0.9.0-incubating

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Livyversion=0.3.0-incubating <0.9.0-incubating

Published CVSS scores

6.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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