CVE-2026-113386: Roundcube Webmail

CRLF injection in Roundcube Webmail

CVSS 7.1 HighEPSS 0.010 · 63rd percentile

Published by the CVE Program (CNA: mitre) at 20 Oct 2026, 04:53 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Roundcube	Webmail	affected 1.6.0 to before 1.6.20 semver affected 1.7.0 to before 1.7.5 semver Other versions: unaffected

Identifiers

CVE-2026-113386

CNA

mitre

Weakness (CWE)

CWE-93

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
7.1	High	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N	CNA (mitre)

CISA KEV Not listed.
EPSS 0.010, the 63rd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 20 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

bugs.debian.org/1151279 issue-trackingthird-party-advisory
github.com/roundcube/roundcubemail/commit/004adaaeca4f6799715a54d12e3f657f19efcc9a patch
roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 vendor-advisoryrelease-notes
github.com/roundcube/roundcubemail/releases/tag/1.7.5 release-notespatch
github.com/roundcube/roundcubemail/releases/tag/1.6.20 release-notespatch
github.com/roundcube/roundcubemail/commit/f62879defc0330ae240c72b83b2d00a8ab337447 patch
github.com/roundcube/roundcubemail/commit/bf5bc0266a8cd16be6b640409e64a6c6c2705049 patch

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.