CVE-2021-26544 - CVE House

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Status published Medium CVE-2021-26544

Apache Livy (Incubating) is vulnerable to cross site scripting

5.4 CVSS

Vulnerability Description

Livy server version 0.7.0-incubating (only) is vulnerable to a cross site scripting issue in the session name. A malicious user could use this flaw to access logs and results of other users' sessions and run jobs with their privileges. This issue is fixed in Livy 0.7.1-incubating.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

We would like to thank Andras Beni for reporting this issue

References

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Affected Vendor

Apache Software Foundation

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Affected Software

Apache Livy (Incubating)

Vulnerable Versions:

Apache Livy (Incubating) 0.7.0-incubating

Timeline

Official Publish: February 20th, 2021

Last Modified: February 13th, 2025

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

T1059.007 JavaScript

T1539 Steal Web Session Cookie

T1213 Data from Information Repositories

T1567 Exfiltration Over Web Service

T1491.001 Defacement