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An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows a remote attacker to bypass authentication and authorization checks, hijack…

Critical CVSS 9.1
CVECVE-2026-9190
First seen2026-08-07 06:15 UTC
Disclosed2026-08-05 16:17 UTC
Last updated2026-08-07 06:15 UTC
Channel statusauto

Summary

An HTTP request smuggling vulnerability in the HTTP App Server of Progress MarkLogic Server before 11.3.6 and 12.0.3 allows a remote attacker to bypass authentication and authorization checks, hijack a legitimate user's session, or capture credentials. The vulnerability occurs when a crafted HTTP request containing both Content-Length and Transfer-Encoding headers causes a reverse proxy and MarkLogic Server to interpret request boundaries differently.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Lint boundary warnings (1)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://community.progress.com/s/article/Marklogic-Critical-Security-Alert-Bulletin-August-2026

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD