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CVE-2026-120203VulnerabilityPublished

ShowDoc 2.8.14 before 3.9.6 contains a code injection vulnerability in its Mock feature that allows authenticated

Affects showdocSource GCVE Database

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Authoritative record:CVE-2026-120203· High 8.7

Not known to be exploited · CVSS 8.7 High : upgrade to 3.9.6 soon.

Data as of 31 Oct 2026, 19:07 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.08.7
CNA (VulnCheck)CVSS 3.18.8
Patch
Available – fixed in 3.9.6
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 31 Oct 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 31 Oct 2026.

What to do

Upgrade star7th/showdoc to 3.9.6.

Affected software

ProductAffectedFixed in
GitHubstar7th/showdocpkg:github/star7th/showdocOther threatsAffected
  • =2.8.14 <3.9.6
Fixed in
  • 3.9.6

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

AI-suggested

A fixed version is available starting from ShowDoc 3.9.6. Users should upgrade to version 3.9.6 or later to remediate this vulnerability. No other mitigation or temporary workaround is provided in the available data.

Description

ShowDoc versions from 2.8.14 up to but not including 3.9.6 contain a code injection vulnerability in the Mock feature. Authenticated users can exploit this flaw to execute arbitrary shell commands with root privileges in the official Docker image by leveraging mockjs templates evaluated via eval(). This vulnerability has a high severity rating with a CVSS score of 8.8.

References

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