Loading vulnerability…
CVE-2026-83156 is a difficult-to-exploit network vulnerability in the Oracle XML Developers Kit component of Oracle Database Server. It affects supported Oracle Database Server versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3. A low-privileged attacker possessing the XDKC privilege can exploit the issue remotely through Oracle Net and compromise the Oracle XML Developers Kit component. The underlying weakness type has not been specified.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Oracle Database Server referenced by the September 15, 2026 patch publication.
A CVSS 7.5 high-severity vulnerability in Oracle XML Developers Kit (XDK) within Oracle Database Server. A low-privileged attacker with XDKC privilege and network access through Oracle Net can compromise and take over the Oracle XML Developers Kit component.
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.