How severe is CVE-2026-7557?

CVE-2026-7557 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-7557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7557?

CVE-2026-7557 affects Progress Marklogic Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7557?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-7557 published?

CVE-2026-7557 was published on 2026-08-05 and last updated on 2026-09-03.

CVE-2026-7557

CVE-2026-7557 is a critical-severity vulnerability in Progress Marklogic Server with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (25th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-347
Affected product: Progress Marklogic Server
Published: 2026-08-05
Last modified: 2026-09-03

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-7557?: CVE-2026-7557 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-7557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7557?: CVE-2026-7557 affects Progress Marklogic Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-7557 published?: CVE-2026-7557 was published on 2026-08-05 and last updated on 2026-09-03.

References

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

Affected products (1)

cpe:2.3:a:progress:marklogic_server:*:*:*:*:*:*:*:*

More vulnerabilities in Progress Marklogic Server

CVE-2026-9193 — Critical (CVSS 9.9): An improper privilege management vulnerability in the Hadoop integration of Progress MarkLogic Server before 11.3.6 and…
CVE-2026-8709 — Critical (CVSS 9.9): An improper privilege management vulnerability in the REST API document patch operation of Progress MarkLogic Server…
CVE-2026-7329 — Critical (CVSS 9.9): An improper privilege management vulnerability in the SQL, SPARQL, and Optic REST query interfaces of Progress…
CVE-2026-9192 — Critical (CVSS 9.8): An authentication bypass vulnerability in the ODBC App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3…
CVE-2026-9195 — Critical (CVSS 9.3): A cross-site scripting vulnerability in the Query Console of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows…
CVE-2026-9190 — Critical (CVSS 9.1): An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3…

All CVEs affecting Progress Marklogic Server →

Other CWE-347 (Improper Verification of Cryptographic Signature) vulnerabilities

CVE-2026-5430 — Critical (CVSS 10.0): The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or…
CVE-2026-56451 — Critical (CVSS 10.0): A vulnerability has been identified in Opcenter X (All versions < V2604). Affected applications do not properly…
CVE-2026-48558 — Critical (CVSS 10.0): SimpleHelp versions 5.5.15 and prior and 6.0 pre-release versions contain an authentication bypass vulnerability in the…
CVE-2023-25574 — Critical (CVSS 10.0): `jupyterhub-ltiauthenticator` is a JupyterHub authenticator for learning tools interoperability (LTI).…
CVE-2024-45409 — Critical (CVSS 10.0): The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <=…
CVE-2024-32962 — Critical (CVSS 10.0): xml-crypto is an xml digital signature and encryption library for Node.js. In affected versions the default…

Browse all CWE-347 (Improper Verification of Cryptographic Signature) vulnerabilities →