CVE-2026-100368 json
CliInvoke.Specializations: Command injection in PowerShell and Cmd shell wrappers
published 2026-09-25 44 d ago modified 2026-09-30 39 d ago also GHSA-wrvw-254r-wpmv , EUVD-2026-87320
- cvss
- 8.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 48%
- public exploits
- 0
- none known
Summary
CliInvoke is a .NET library for invoking command-line programs, and its `CliInvoke.Specializations` packages provide specialized wrappers for shells such as PowerShell and Windows Command Prompt. `CliInvoke.Specializations` versions 2.2.0 through 2.8.4, 2.9.0 through 2.9.3, 2.10.0 through 2.10.4, 3.0.0-alpha.1 through 3.0.0-alpha.4, and 3.0.0-alpha.8 through 3.0.0-alpha.10, as well as `AlastairLundy.CliInvoke.Specializations` versions 1.0.0-rc.1 through 1.6.1.1, contain an OS command injection vulnerability in their PowerShell and Cmd wrappers. The wrappers pass a caller-controlled target and arguments to `pwsh -Command` or `cmd /c` using a single `ProcessStartInfo.Arguments` string, allowing a double quote in untrusted input to break operating-system-level quoting and cause the shell to execute an additional command with the host process's privileges. The vulnerability is patched in `CliInvoke.Specializations` versions 2.8.5, 2.9.4, 2.10.5, and 3.0.0-beta.1, and in `AlastairLundy.CliInvoke.Specializations` version 2.0.2. No complete workaround is available; users unable to upgrade should reject or remove double quotes from target paths and arguments, additionally reject shell metacharacters in versions 2.2.0 through 2.9.2 and 3.0.0-alpha.1 through 3.0.0-alpha.4, or bypass the PowerShell and Cmd wrappers and invoke target processes directly when handling untrusted input.
Patch / fix
- nuget CliInvoke.Specializations 2.8.5, 2.9.4, 2.10.5, 3.0.0-beta.1
- nuget AlastairLundy.CliInvoke.Specializations 2.0.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 40 d ago
Exploit prediction
0.58% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 8.4 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| nuget | CliInvoke.Specializations | >=2.2.0, <2.8.5 >=2.9.0, <2.9.4 >=2.10.0, <2.10.5 >=3.0.0-alpha.1, <3.0.0-beta.1 >=3.0.0-alpha.8, <3.0.0-beta.1 |
2.8.5 2.9.4 2.10.5 3.0.0-beta.1 |
| nuget | AlastairLundy.CliInvoke.Specializations | >=1.0.0-rc.1, <2.0.2 |
2.0.2 |
Affected products
- alastairlundy CliInvoke.Specializations
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/alastairlundy/CliInvoke/commit/1e98582f02eb43e345e5b97b8dd6ff9443806685
web
-
github.com
/alastairlundy/CliInvoke/commit/2077e5239850e83dc9cc67ae6036dcd4e68a1876
web
-
github.com
/alastairlundy/CliInvoke/security/advisories/GHSA-wrvw-254r-wpmv
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-100368
advisory
-
github.com
/alastairlundy/CliInvoke
package
-
github.com
/alastairlundy/CliInvoke/releases/tag/2.10.5
web
-
github.com
/alastairlundy/CliInvoke/releases/tag/3.0.0-beta.1
web
Sources
- CVE List CVE-2026-100368
- GitHub Advisory GHSA-wrvw-254r-wpmv
- NVD CVE-2026-100368
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