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VulnerabilityPublished Updated

CVE-2025-66203: lemon8866 StreamVault · OS Command Injection

Affects lemon8866 StreamVaultSource CVE Database V5

0

Not known to be exploited · CVSS 10.0 Critical : upgrade to 251126 as a priority.

Data as of 26 Oct 2026, 17:16 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.7% chance of exploitation in 30 days – higher than 55% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 251126
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Dec 2025

  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

Upgrade lemon8866/StreamVault to 251126.

Affected software

ProductAffectedFixed in
GitHublemon8866/StreamVaultpkg:github/lemon8866/StreamVaultOther threatsAffected
  • <251126
Fixed in
  • 251126

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

AI-suggested

  1. Immediately upgrade StreamVault installations to version 251126 or later, where the vulnerability is patched.
  2. Restrict access to the /admin/api/saveConfig endpoint strictly to trusted administrators using network segmentation, VPNs, or zero-trust access controls.
  3. Implement multi-factor authentication (MFA) for all administrative accounts to reduce the risk of credential compromise.
  4. Monitor logs and network traffic for unusual command execution patterns or unexpected yt-dlp argument configurations.
  5. Employ application-layer firewalls or runtime application self-protection (RASP) solutions to detect and block command injection attempts.
  6. Conduct regular security audits and penetration tests focusing on administrative interfaces and command execution paths.
  7. Educate administrators on secure configuration practices and the risks of injecting unsanitized input into command lines.
  8. If upgrading immediately is not feasible, consider temporarily disabling the vulnerable configuration endpoint or restricting its usage until patching is possible.

Description

StreamVault is a video download integration solution. Prior to version 251126, a Remote Code Execution (RCE) vulnerability exists in the stream-vault application (SpiritApplication). The application allows administrators to configure yt-dlp arguments via the /admin/api/saveConfig endpoint without sufficient validation. These arguments are stored globally and subsequently used in YtDlpUtil.java when constructing the command line to execute yt-dlp. This issue has been patched in version 251126.

References

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