Skip to main content
VulnerabilityPublished Updated

CVE-2026-100369: alastairlundy CliInvoke · Argument Injection

Affects alastairlundy CliInvokeSource CVE Database V5

0
Compare

Not known to be exploited · CVSS 8.4 High · fixed in 2.8.5 : patch alastairlundy CliInvoke soon.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 3.1 base score
8.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.8.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Sep 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 8 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
alastairlundyCliInvokeAffected
  • >=2.0.0 <=2.8.4
  • >=2.9.0 <=2.9.3
  • >=2.10.0 <=2.10.4
  • >=3.0.0-alpha.1 <=3.0.0-beta.1
Fixed in–
alastairlundyAlastairLundy.CliInvokeAffected
  • >=2.0.0-alpha.1 <=2.0.0
Fixed in–
NuGetalastairlundy.cliinvokepkg:nuget/alastairlundy.cliinvokeOther threatsAffected
  • =2.0.0-alpha.1 <=2.0.0
Fixed in–

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

AI-suggested

A fix is available in CliInvoke versions 2.8.5, 2.9.4, 2.10.5, and 3.0.0-beta.2, and AlastairLundy.CliInvoke version 2.0.2. Users are strongly advised to upgrade to these patched versions. No complete workaround exists. Users unable to upgrade can partially mitigate the risk by removing double quotes from targets and arguments, removing shell metacharacters when using shell runners, or bypassing the vulnerable factories by constructing a ProcessConfiguration with an explicit ArgumentList.

Description

CliInvoke and its formerly named `AlastairLundy.CliInvoke` package are .NET libraries for invoking command-line programs and wrapping executable processes. `CliInvoke` versions 2.0.0 through 2.8.4, 2.9.0 through 2.9.3, 2.10.0 through 2.10.4, and 3.0.0-alpha.1 through 3.0.0-beta.1, as well as `AlastairLundy.CliInvoke` versions 2.0.0-alpha.1 through 2.0.0, contain an argument-injection vulnerability in `RunnerProcessFactory` on the 2.x line and `RunnerConfigurationFactory` on the 3.x line. These factories combine runner arguments, a caller-controlled target, and caller-controlled arguments into one `ProcessStartInfo.Arguments` string, allowing a double quote in the target or an argument to terminate an operating-system-level quoted region and inject unintended elements into the runner’s argument vector, potentially resulting in arbitrary command execution when a shell runner is used. The vulnerability is patched in `CliInvoke` versions 2.8.5, 2.9.4, 2.10.5, and 3.0.0-beta.2, and in `AlastairLundy.CliInvoke` version 2.0.2. No complete workaround is available; users unable to upgrade can partially mitigate the issue by removing double quotes from targets and arguments, additionally removing shell metacharacters when using shell runners, or bypassing the vulnerable factory and constructing a `ProcessConfiguration` with an explicit `ArgumentList`.

References

Community reviews

Loading reviews…