CVE-2021-26544 json
Apache Livy (Incubating) is vulnerable to cross site scripting
published 2021-02-20 5 y ago modified 2026-06-17 4 mo ago also GHSA-74qp-233x-p5j8 , EUVD-2021-0984
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.8%
- EPSS 2.8% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.apache.livy:livy-server 0.7.1-incubating
Exploit prediction
2.82% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.livy:livy-server | >=0.7.0-incubating, <0.7.1-incubating |
0.7.1-incubating |
Affected products
- Apache Software Foundation Apache Livy (Incubating)
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/apache/incubator-livy/commit/4d8a912699683b973eee76d4e91447d769a0cb0d
web, patch, third-party-advisory
-
lists.apache.org
/thread.html/r2db14e7fd1e5ec2519e8828d43529bad623d75698cc7918af3a3f3ed%40%3Cuser.livy.apache.org%3E
web, patch, vendor-advisory
-
openwall.com
/lists/oss-security/2021/02/20/1
mailing-list, web, patch, third-party-advisory
-
github.com
/apache/incubator-livy/commit/9f1ba47a2f0d8accc435b133b42c3a76aa9ac846
web
-
nvd.nist.gov
/vuln/detail/CVE-2021-26544
advisory
Sources
- CVE List CVE-2021-26544
- GitHub Advisory GHSA-74qp-233x-p5j8
- NVD CVE-2021-26544
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