ShowDoc 2.8.14 before 3.9.6 contains a code injection vulnerability in its Mock feature that allows authenticated
Affects showdocSource GCVE Database
Not known to be exploited · CVSS 8.7 High : upgrade to 3.9.6 soon.
Data as of 31 Oct 2026, 19:07 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 8.7 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 8.8 |
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 31 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
GitHubstar7th/showdocpkg:github/star7th/showdocOther threats | Affected
| Fixed in
|
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
- nvd.nist.gov/vuln/detail/CVE-2026-120203 (opens in a new tab)
- github.com/star7th/showdoc/commit/5a2087a3f408f5266f61e9e2fb98845ef4788288 (opens in a new tab)
- gist.github.com/LioTree/028af150fd991cf9924dd2c7d5912e54 (opens in a new tab)
- github.com/star7th/showdoc (opens in a new tab)
- github.com/star7th/showdoc/blob/v3.9.5/mock/index.js (opens in a new tab)
- vulncheck.com/advisories/showdoc-2.8.14-before-3.9.6-code-injection-via-mock-templates (opens in a new tab)