What is CVE-2026-62641?

CVE-2026-62641 is a medium-severity vulnerability in Roundcube Webmail, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2026-07-14.

How severe is CVE-2026-62641?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Resource exhaustion in Roundcube Webmail

CVE-2026-62641

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the TNEF decoder was subject to denial of service via a crafted compressed-RTF size.

EPSS: 0.005 (38.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.

Affected products

Roundcube Webmail — versions 1.6.0, 1.7.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cve@mitre.org (Patch)
cve@mitre.org (Patch)
cve@mitre.org (Release Notes)
cve@mitre.org (Release Notes)
cve@mitre.org (Vendor Advisory)

Frequently asked questions

What is CVE-2026-62641?: CVE-2026-62641 is a medium-severity vulnerability in Roundcube Webmail, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 4.3/10. Published 2026-07-14.
How severe is CVE-2026-62641?: Medium severity. CVSS v3 base score is 4.3 out of 10.