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CVE-2018-20240

18
FAUCET Score

CVE-2018-20240 describes a cross-site scripting (XSS) vulnerability in Atlassian Fisheye and Crucible versions prior to 4.7.0. This flaw allows remote attackers to inject arbitrary HTML or JavaScript through the href parameter within the administrative linker functionality. The vulnerability is rated Medium severity (CVSS 4.8), requiring high privileges and user interaction, with potential for limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.7.0CPE matchmatch criteria
cpe:2.3:a:atlassian:crucible:*:*:*:*:*:*:*:*
< 4.7.0CPE matchmatch criteria
cpe:2.3:a:atlassian:fisheye:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 92nd percentile among its peer group of 4,937 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

jira.atlassian.com / browse/CRUC-8381
Vendor Advisory
jira.atlassian.com / browse/FE-7163
Vendor Advisory
securityfocus.com / bid/107128
Third Party AdvisoryVDB Entry