CVE-2026-42401
published 2026-05-28CVE-2026-42401: Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch…
PriorityP428medium5.4CVSS 3.1
AVNACLPRLUIRSCCLILAN
EPSS
0.14%
3.8th percentile
Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user's browser session.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| elastic | kibana | >= 8.0.0 < 8.19.16 | 8.19.16 |
| elastic | kibana | 8.0.0 – 8.19.15 | — |
| elastic | kibana | >= 9.0.0 < 9.3.5 | 9.3.5 |
| elastic | kibana | 9.0.0 – 9.3.4 | — |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Elastic Kibana up to 8.19.15/9.3.4 cross site scripting (EUVD-2026-33012)
vuldb·2026-05-28·CVSS 4.1
CVE-2026-42401 [MEDIUM] Elastic Kibana up to 8.19.15/9.3.4 cross site scripting (EUVD-2026-33012)
A vulnerability was found in Elastic Kibana up to 8.19.15/9.3.4. It has been declared as problematic. Affected by this issue is some unknown functionality. Executing a manipulation can lead to cross site scripting.
This vulnerability is tracked as CVE-2026-42401. The attack can be launched remotely. No exploit exists.
GHSA
GHSA-7r23-c4px-q9xc: Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection
ghsa_unreviewed·2026-05-28
CVE-2026-42401 [MEDIUM] CWE-79 GHSA-7r23-c4px-q9xc: Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection
Improper Neutralization of Input During Web Page Generation (CWE-79) in Kibana can lead to stored HTML injection. A user with write access to an Elasticsearch index could persist crafted markup which, when subsequently rendered through an affected Kibana view by another user, was not sufficiently sanitized. Successful exploitation could result in unauthorized UI manipulation and outbound network requests issued from the viewing user's browser session.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-05-28
Published