CVE-2026-59838
Last modified
CVE-2026-59838 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>.
Description
A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiSIEM 7.4.0, FortiSIEM 7.3.0 through 7.3.4, FortiSIEM 7.2.0 through 7.2.6, FortiSIEM 7.1 all versions, FortiSIEM 7.0 all versions, FortiSIEM 6.7 all versions, FortiSIEM 6.6 all versions, FortiSIEM 6.5 all versions, FortiSIEM 6.4 all versions may allow attacker to execute unauthorized code or commands via <insert attack vector here>
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fortinet | Fortisiem | >= 6.4.0, < 7.2.7 |
| Fortinet | Fortisiem | >= 7.3.0, < 7.3.5 |
| Fortinet | Fortisiem | 7.4.0 |
References
- https://fortiguard.fortinet.com/psirt/FG-IR-26-149Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-59838?
How severe is CVE-2026-59838?
How do I fix CVE-2026-59838?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-59832SiYuan is an open-source personal knowledge management syste…7.7
- CVE-2026-59833SiYuan is an open-source personal knowledge management syste…8.6
- CVE-2026-59834SiYuan is an open-source personal knowledge management syste…7.5
- CVE-2026-59835A exposure of resource to wrong sphere vulnerability in Fort…8.6
- CVE-2026-59836A improper certificate validation vulnerability in Fortinet …9.8
- CVE-2026-59837A stack-based buffer overflow vulnerability in Fortinet Fort…6.6
- CVE-2026-59839A improper limitation of a pathname to a restricted director…5.5
- CVE-2026-5984A vulnerability was identified in D-Link DIR-605L 2.13B01. I…8.8
- CVE-2026-59840A buffer over-read vulnerability in Fortinet FortiOS 7.6.0 t…4.3
- CVE-2026-59841A improper restriction of communication channel to intended …7.5
- CVE-2026-59842A flaw was found in libssh. During server-side GSSAPI key ex…5.3
- CVE-2026-59843A flaw was found in libssh. A remote authenticated peer can …6.5
Are you affected by CVE-2026-59838?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
