What is CVE-2026-26272?

CVE-2026-26272 is a medium-severity vulnerability in Sysadminsmedia Homebox, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-03-03.

How severe is CVE-2026-26272?

Medium severity. CVSS v3 base score is 4.6 out of 10.

XSS in Sysadminsmedia Homebox

CVE-2026-26272

HomeBox is a home inventory and organization system. Prior to 0.24.0-rc.1, a stored cross-site scripting (XSS) vulnerability exists in the item attachment upload functionality. The application does not properly validate or restrict uploaded file types, allowing an authenticated user to upload malicious HTML or SVG files containing executable JavaScript (also, potentially other formats that render scripts). Uploaded attachments are accessible via direct links. When a user accesses such a file in their browser, the embedded JavaScript executes in the context of the application's origin. This vulnerability is fixed in 0.24.0-rc.1.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (6.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N.

Affected products

Sysadminsmedia Homebox — versions < 0.24.0-rc.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-26272?: CVE-2026-26272 is a medium-severity vulnerability in Sysadminsmedia Homebox, classified under Cross-site Scripting. CVSS score: 4.6/10. Published 2026-03-03.
How severe is CVE-2026-26272?: Medium severity. CVSS v3 base score is 4.6 out of 10.