What is CVE-2026-25616?

CVE-2026-25616 is a medium-severity vulnerability in Blesta, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2026-02-03.

How severe is CVE-2026-25616?

Medium severity. CVSS v3 base score is 4.7 out of 10.

XSS in Blesta

CVE-2026-25616

Blesta 3.x through 5.x before 5.13.3 mishandles input validation, aka CORE-5665.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-02-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (40.5th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001

Affected products

Blesta — versions 3.0.0
Phillipsdata Blesta

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.blesta.com/2026/01/28/security-advisory/ (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-25616?: CVE-2026-25616 is a medium-severity vulnerability in Blesta, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2026-02-03.
How severe is CVE-2026-25616?: Medium severity. CVSS v3 base score is 4.7 out of 10.