9.1

CVE-2026-93909: ibm websphere application server - liberty Session Fixation

CVSS: 9.1v3.1CriticalAwaiting analysis
Published 13-10-2026Last modified 14-10-2026
Open JSON

Vulnerability summary

CVE-2026-93909 is a critical (CVSS 9.1) Session Fixation vulnerability in ibm websphere application server - liberty. EPSS estimates a 0.35% chance of exploitation in the next 30 days, higher than 27.6% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.35%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-10-2026
    PublishedVulnerability first disclosed.
  2. 14-10-2026
    Last modifiedVulnerability information updated.

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.10 is vulnerable by an authentication bypass vulnerability when samlWeb-2.0 feature is enabled.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.35%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202619-10-2026
EPSS score
0.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ibm1 product

1 vendor · 1 product

References

1 links