Vulnerability · Published Aug 5, 2026 · Assigned by ProgressSoftware

CVE-2026-7557SAML authentication bypass in Progress MarkLogic Server

Critical 9.1

In plain English

A critical-severity security flaw in MarkLogic Server from Progress Software Corporation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.5%top 59.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Progress Software Corporation	MarkLogic Server	11.0.0 – before 11.3.612.0.0 – before 12.0.3

Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-August-2026 vendor-advisory