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CVE-2019-4304

23
FAUCET Score

CVE-2019-4304 describes a security bypass vulnerability in IBM WebSphere Application Server - Liberty due to improper session validation. This allows a remote attacker to circumvent security restrictions. Rated with a CVSS score of 6.3 (Medium), the vulnerability is network-exploitable with low attack complexity and requires low privileges, potentially impacting confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, nor is public exploit code available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, aligning with typical trends for most vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
< 19.0.0.10CPE matchmatch criteria
cpe:2.3:a:ibm:websphere_application_server:*:*:*:*:liberty:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.01%
Probability of exploitation in next 30 days
EPSS Percentile
59.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0101 is in the 73rd percentile among its peer group of 21,974 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 0.0 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/160950
VDB EntryVendor Advisory
ibm.com / support/pages/node/960171
Vendor Advisory