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CVE-2018-11563

19
FAUCET Score

CVE-2018-11563 describes a cross-site scripting (XSS) vulnerability in Open Ticket Request System (OTRS) versions 6.0.x through 6.0.7, impacting Debian and OTRS installations. This medium-severity vulnerability (CVSS 4.6) allows an attacker to inject and execute arbitrary stylesheet or JavaScript code in a logged-in customer's browser via a specially crafted email, requiring user interaction and low privileges. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 6.0.0, <= 6.0.7CPE matchmatch criteria
cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.6MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.1
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 88th percentile among its peer group of 15,239 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

community.otrs.com / security-advisory-2018-02-security-update-for-otrs-framework
PatchVendor Advisory
lists.debian.org / debian-lts-announce/2019/08/msg00018.html
Mailing ListThird Party Advisory
lists.otrs.org / pipermail/announce/2018/000720.html
Vendor Advisory
otrs.com / category/release-and-security-notes-en
Release NotesVendor Advisory