CVE-2026-77816

IBM WebSphere Application Server Liberty Improper Certificate Validation

At a glance

Severity: MEDIUM 6.5
EPSS: EPSS 0.23 % · percentile 14 (2026-10-27)
State: PUBLISHED
Published: 2026-10-13
Updated: 2026-10-14
Assigner: ibm
NVD status: Awaiting Analysis

Description

IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.9 administrative client could allow man-in-the-middle attacks. An attacker could exploit this vulnerability to obtain sensitive information.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N	ibm
CVSS 3.1	MEDIUM 6.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N	NVD · psirt@us.ibm.com (Secondary)

Weaknesses (CWE)

CWE-295

European references

ENISA EUVD · EUVD-2026-100488
GCVE · GCVE-0-2026-77816

Affected products

Product	Versions
IBM · WebSphere Application Server - Liberty	affected 17.0.0.3 ≤ 26.0.0.9

References

https://www.ibm.com/support/pages/node/7291394

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD