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VulnerabilityPublished Updated

CVE-2026-30625: Upsonic · Command Injection

Affects UpsonicSource CVE Database V5

0

Not known to be exploited · CVSS 9.8 Critical.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 61% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubupsonic/Upsonicpkg:github/upsonic/UpsonicOther threatsAffected
  • =0.71.6
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Version 0.72.0 added a warning about the risks of using Stdio servers but does not constitute a fix. Until an official patch is released, avoid using vulnerable Upsonic versions or restrict access to the MCP server/task creation functionality to trusted users only.

Description

Upsonic version 0.71.6 contains a critical remote code execution vulnerability in its MCP server/task creation functionality. The vulnerability arises because users can define MCP tasks with arbitrary command and argument values. Although an allowlist restricts commands, some allowed commands like npm and npx accept argument flags that enable execution of arbitrary OS commands. This can lead to remote code execution with the privileges of the Upsonic process. Version 0.72.0 introduced a warning about the risks of using Stdio servers that can execute commands directly on the host machine. No official patch or remediation has been confirmed yet.

References

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