PatchSiren cyber security CVE debrief

CVE-2026-36728 fastapi-admin CVE debrief

CVE-2026-36728 is a markdown based cross-site scripting (XSS) vulnerability in the AI assistant chat function of FastapiAdmin v2.2.0. This vulnerability allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into a chat message. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 5.4, indicating a MEDIUM severity level. The vulnerability was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-36728) and last modified on [cveModifiedAt](https://nvd.nist.gov/vuln/detail/CVE-2026-36728).

Vendor: fastapi-admin
Product: fastapi-admin v2.2.0
CVSS: MEDIUM 5.4
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-09
Original CVE updated: 2026-06-10
Advisory published: 2026-06-09
Advisory updated: 2026-06-10

Who should care

Users of FastapiAdmin v2.2.0 AI assistant chat function should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability is caused by improper sanitization of user input in the chat function, allowing attackers to inject malicious scripts. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Defensive priority

MEDIUM

Recommended defensive actions

Apply patches or updates provided by the vendor to fix the vulnerability.
Implement proper input validation and sanitization for user input in the chat function.
Monitor the chat function for suspicious activity and implement additional security measures as needed.

Evidence notes

The vulnerability is classified as CWE-79, which is a type of cross-site scripting (XSS) vulnerability.

Official resources

CVE-2026-36728 was published on 2026-06-09T19:17:43.327Z and last modified on 2026-06-10T20:15:58.353Z.