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VulnerabilityPublished

CVE-2026-118869: SHIRASAGI · OS Command Injection

Affects SHIRASAGISource CVE Database V5

0
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Not known to be exploited · CVSS 8.8 High.

Data as of 5 Nov 2026, 10:05 UTC

CVSS 3.0 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (jpcert)CVSS 3.08.8
CNA (jpcert)CVSS 4.08.7
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
SHIRASAGI ProjectSHIRASAGIAffected
  • >=1.19.0 <=1.21.0
Fixed in–
RubyGemsshirasagipkg:gem/shirasagiOther threatsAffected
  • >=1.19.0 <=1.21.0
Fixed in–

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

AI-suggested

Until a fix is available, restrict authenticated access to trusted users only and monitor for suspicious activity related to command execution. Do not assume the vulnerability is mitigated without official vendor confirmation.

Description

CVE-2026-118869 is an OS command injection vulnerability in SHIRASAGI versions 1.19.0 through 1.21.0. It allows an authenticated attacker to execute arbitrary operating system commands on the affected system without user interaction. The vulnerability has a high severity score of 8.8, indicating significant potential impact on confidentiality, integrity, and availability.

References

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