CVE-2021-26544
Apache Livy (Incubating) is vulnerable to cross site scripting
- Published
- Updated
- Reserved
- Assigned by
- apache
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.
Timeline
ID reserved
By apache
- 19 days later
· 19 days later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 2.8% · top 13% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.
Weakness
Affected products
Apache Software Foundation · Apache Livy (Incubating)
- affected Apache Livy (Incubating) 0.7.0-incubating
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenorg.apache.livy:livy-serverGHSA-74qp-233x-p5j8 (opens in a new tab)
What to do
Workaround: Users can upgrade to 0.7.1-incubating or apply the patch at the github URL.
References (3)
- https://github.com/apache/incubator-livy/commit/4d8a912699683b973eee76d4e91447d769a0cb0d (opens in a new tab)x_refsource_MISCx_transferred
- https://lists.apache.org/thread.html/r2db14e7fd1e5ec2519e8828d43529bad623d75698cc7918af3a3f3ed%40%3Cuser.livy.apache.org%3E (opens in a new tab)x_refsource_MISCx_transferred
- [oss-security] 20210220 CVE-2021-26544: Apache Livy (Incubating) is vulnerable to cross site scripting (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-74qp-233x-p5j8 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-26544)Record last updated .