What is CVE-2026-7557?

CVE-2026-7557 is a critical-severity vulnerability in Progress Marklogic Server, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.1/10. Published 2026-08-05.

How severe is CVE-2026-7557?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Vulnerability in Progress Marklogic Server

CVE-2026-7557

An improper verification of cryptographic signature vulnerability in the SAML authentication module of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows an unauthenticated remote attacker to bypass authentication and impersonate any user, including administrators. This vulnerability affects deployments with SAML single sign-on enabled.

EPSS: 0.003 (24.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Progress Marklogic_server
Progress Software Corporation Marklogic Server — versions 11.0.0, 12.0.0

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

security@progress.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-7557?: CVE-2026-7557 is a critical-severity vulnerability in Progress Marklogic Server, classified under Improper Verification of Cryptographic Signature. CVSS score: 9.1/10. Published 2026-08-05.
How severe is CVE-2026-7557?: Critical severity. CVSS v3 base score is 9.1 out of 10.