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CVE-2026-58123 is a missing-authentication vulnerability in Hermes WebUI versions before 0.51.788. Embedded terminal API endpoints permit unauthenticated access to critical terminal functions. A remote attacker can create a terminal session, attach a PTY shell, and submit arbitrary shell commands through the terminal input interface using four sequential HTTP requests. Commands execute with the privileges of the Hermes WebUI server process.
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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.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A named CVE referenced in a template-related GitHub conversation; the content provides no information about the affected product, vulnerability type, impact, exploitability, or remediation.
An unauthenticated remote code execution vulnerability in Hermes WebUI before version 0.51.788, caused by exposed embedded terminal API endpoints that permit arbitrary shell command execution without credentials.
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.