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CVE-2026-9203 is a server-side request forgery vulnerability in Progress MarkLogic Server affecting versions 11.0.0 and later before 11.3.6, and 12.0.0 and later before 12.0.3. The flaw allows an authenticated user with low-privileged roles to bypass protections intended to restrict access to cloud instance metadata endpoints. In affected deployments, this can cause the server to issue attacker-influenced requests to metadata services that should not be reachable through normal application behavior, resulting in exposure of sensitive cloud environment credentials and expanding the impact beyond the database server itself.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability listed in Progress Software's August 2026 MarkLogic Server security alert affecting MarkLogic Server prior to 11.3.6 and prior to 12.0.3.
A vulnerability affecting Progress Software MarkLogic Server prior to versions 11.3.6 and 12.0.3.
An SSRF vulnerability in Progress MarkLogic Server that allows a low-privileged authenticated user to bypass protections for cloud instance metadata endpoints, potentially exposing cloud credentials and enabling compromise of cloud resources accessible to the host instance.
A specific vulnerability in Progress MarkLogic Server disclosed in an August 2026 critical security alert bulletin; the bulletin states the set of flaws could allow unauthorized access to or control of affected MarkLogic Server instances.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.