What is CVE-2026-48847?

CVE-2026-48847 is a low-severity vulnerability in Roundcube Webmail, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 3.7/10. Published 2026-05-25.

How severe is CVE-2026-48847?

Low severity. CVSS v3 base score is 3.7 out of 10.

Vulnerability in Roundcube Webmail

CVE-2026-48847

Roundcube Webmail 1.6.x before 1.6.16, and 1.7.x before 1.7.1 allows pre-authentication arbitrary file deletion via redis/memcache session poisoning bypass.

EPSS: 0.001 (21.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Roundcube Webmail — versions 1.6.0, 1.7.0

Weakness classification (CWE)

CWE-669 — Incorrect Resource Transfer Between Spheres

References

cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-48847?: CVE-2026-48847 is a low-severity vulnerability in Roundcube Webmail, classified under Incorrect Resource Transfer Between Spheres. CVSS score: 3.7/10. Published 2026-05-25.
How severe is CVE-2026-48847?: Low severity. CVSS v3 base score is 3.7 out of 10.