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CVE-2017-6820

23
FAUCET Score

CVE-2017-6820 is a cross-site scripting (XSS) vulnerability affecting Roundcube webmail versions before 1.1.8 and 1.2.x before 1.2.4. An attacker can exploit this by injecting a crafted CSS token sequence within an SVG element. Rated Medium severity (CVSS 6.1), it requires user interaction (UI:R) and could lead to low impact on confidentiality and integrity (C:L, I:L). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.1.7CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*
1.2.0CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:1.2.0:*:*:*:*:*:*:*
1.2.1CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:1.2.1:*:*:*:*:*:*:*
1.2.2CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:1.2.2:*:*:*:*:*:*:*
1.2.3CPE matchmatch criteria
cpe:2.3:a:roundcube:webmail:1.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 80th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
ubuntupatch availablevia ubuntu_usn
Product: roundcube (bionic)Fixed in: 1.3.6+dfsg.1-1ubuntu0.1~esm7
ubuntupatch availablevia ubuntu_usn
Product: roundcube (xenial)Fixed in: 1.2~beta+dfsg.1-0ubuntu1+esm7

Vendor Advisories (1)

ubuntuUSN-8132-1

Roundcube Webmail vulnerabilities

Mar 30, 2026

References

github.com / roundcube/roundcubemail/commit/cbd35626f7db7855f3b5e2db00d28ecc1554e9f4
Issue TrackingPatchThird Party Advisory
github.com / roundcube/roundcubemail/commit/fa2824fdcd44af3f970b2797feb47652482c8305
Issue TrackingPatchThird Party Advisory
github.com / roundcube/roundcubemail/releases/tag/1.1.8
PatchRelease NotesThird Party Advisory
github.com / roundcube/roundcubemail/releases/tag/1.2.4
PatchRelease NotesThird Party Advisory
github.com / roundcube/roundcubemail/wiki/Changelog
PatchRelease NotesThird Party Advisory
roundcube.net / news/2017/03/10/updates-1.2.4-and-1.1.8-released
Release NotesVendor Advisory
securityfocus.com / bid/96817