Pre-authentication RCE in Fortra GoAnywhere MFT License Response Servlet
CVE-2023-0669 affects Fortra GoAnywhere MFT. The vulnerability is in the License Response Servlet and related license-processing path, where the application deserializes attacker-controlled data from a license response bundle. Multiple sources in the provided content describe the issue as a pre-authentication command injection / remote code execution flaw caused by deserialization of untrusted data. Successful exploitation allows a remote, unauthenticated attacker to supply a crafted object that is deserialized by the server and results in arbitrary code execution. The issue was exploited as a zero-day beginning in January 2023 and was patched by Fortra in GoAnywhere MFT version 7.1.2.
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Impact
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Mitigation
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Remediation
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Exploits
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (2 hidden).
This repository is a Java-based exploit for CVE-2023-0669, a pre-authentication command injection vulnerability in Fortra GoAnywhere MFT. The exploit targets the License Response Servlet (typically at /goanywhere/lic/accept), which is vulnerable due to unsafe deserialization of attacker-controlled objects. The main entry point is 'src/main/java/org/gaw/Exploit.java', which provides a command-line interface to generate a malicious serialized payload (using ysoserial gadget chains, e.g., CommonsBeanutils1), encrypt it with the appropriate AES key (matching the GoAnywhere MFT implementation), and send it to the target endpoint. The exploit supports specifying a proxy, custom endpoint path, and arbitrary commands for execution. The repository includes supporting code for payload generation, encryption, HTTP communication, and utility functions. The exploit is operational and can be used to achieve remote code execution on vulnerable GoAnywhere MFT servers. No hardcoded IPs or domains are present, but the default and expected endpoint is '/goanywhere/lic/accept'.
Affected products & vendors
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Recent activity
35 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in GoAnywhere MFT exploited by the Clop ransomware group in 2023 to compromise over 130 organizations.
A vulnerability in GoAnywhere MFT that was exploited by Clop ransomware in 2023 to compromise over 130 organizations.
A Fortra GoAnywhere vulnerability (described as command injection) used in 2023 exploitation activity attributed to Clop, with overlapping infrastructure compared to MOVEit exploitation.
A GoAnywhere MFT zero-day vulnerability exploited by the Clop ransomware group in 2023 to compromise Fortra customers and access sensitive data.
The version that knows your environment.
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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.