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CVE-2026-48276 is a critical unrestricted upload of file with dangerous type vulnerability in Adobe ColdFusion. It affects ColdFusion 2025 Update 9 and earlier and ColdFusion 2023 Update 20 and earlier. The flaw allows an attacker to upload a dangerous file type to a vulnerable ColdFusion instance, which can then be used to achieve arbitrary code execution in the context of the current user. The issue is remotely exploitable over the network, requires no privileges, and does not require user interaction. Published scoring indicates CVSS 3.1 10.0 with scope changed and high confidentiality, integrity, and availability impact.
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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.
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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.
27 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical Adobe ColdFusion unrestricted file upload vulnerability that can enable remote code execution and was fixed in APSB26-68.
One of several critical ColdFusion vulnerabilities patched alongside the primary flaw; associated with file upload, path traversal, or arbitrary code execution.
A maximum-severity Adobe ColdFusion vulnerability that could allow attackers to upload malicious files and execute arbitrary code.
An Adobe ColdFusion unauthenticated remote code execution vulnerability highlighted as a CVSS 10.0 example of maximum theoretical severity.
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.