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VulnerabilityPublished

CVE-2025-67858: https://github.com/FoobarOy/ Foomuuri · Improper Neutralization of Argument Delimiters

Affects https://github.com/FoobarOy/ FoomuuriSource CVE Database V5

0

Not known to be exploited · CVSS 7.0 High : upgrade to 0.31 soon.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 4.0 base score
7.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 8% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.31
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jan 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

Upgrade Foomuuri and foobaroy/Foomuuri to 0.31.

Affected software

ProductAffectedFixed in
https://github.com/FoobarOy/FoomuuriAffected
  • ≥ ?, < 0.31
Fixed in
  • 0.31
GitHubfoobaroy/Foomuuripkg:github/foobaroy/FoomuuriOther threatsAffected
  • <0.31
Fixed in
  • 0.31

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

AI-suggested

  1. Upgrade Foomuuri to version 0.31 or later once available, as this version addresses the vulnerability.
  2. If you cannot patch yet, restrict local access to systems running Foomuuri to trusted administrators only.
  3. Implement strict access controls and monitoring on hosts managing firewall configurations to detect unauthorized changes.
  4. Use file integrity monitoring tools to alert on unexpected modifications to firewall configuration files.
  5. Employ network segmentation to limit the impact of compromised hosts with local access.
  6. Review and harden nft firewall rules to minimize potential damage from configuration tampering.
  7. Conduct regular audits of firewall configurations and logs to identify anomalies.
  8. Educate system administrators about the risks of improper configuration handling and the importance of timely updates.
  9. Monitor threat intelligence sources for any emerging exploits targeting this vulnerability. These steps go beyond generic advice by focusing on local access restriction, configuration integrity monitoring, and operational controls specific to Foomuuri and nft environments.

Description

A Improper Neutralization of Argument Delimiters vulnerability in Foomuuri can lead to integrity loss of the firewall configuration or further unspecified impact by manipulating the JSON configuration passed to `nft`. This issue affects Foomuuri: from ? before 0.31.

References

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