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CVE-2020-4304

22
FAUCET Score

CVE-2020-4304 is a cross-site scripting (XSS) vulnerability affecting IBM WebSphere Application Server - Liberty versions 17.0.0.3 through 20.0.0.3. This flaw allows attackers to inject arbitrary JavaScript into the web UI, potentially leading to credential disclosure within a trusted user session. Rated as Medium severity with a CVSS score of 6.1, it requires user interaction and network access for exploitation, but has low impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 17.0.0.3, <= 20.0.0.3CPE matchmatch criteria
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:*

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
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
52.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 61st percentile among its peer group of 26,234 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

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/176670
VDB EntryVendor Advisory
ibm.com / support/pages/node/6147195
PatchVendor Advisory