# CVE-2026-118692: CherryTree through 1.7.2 OS Command Injection via Custom Web Link Action

Status: published. Published: 2026-10-28. Updated: 2026-11-03.

CherryTree through 1.7.2 contains an OS command injection vulnerability in CtActions::link_clicked that allows attackers to execute commands by embedding shell metacharacters in web link URLs. When the non-default Custom Web Link Clicked Action option is enabled, attackers can supply crafted documents whose links pass $(...), backticks, or semicolons unquoted to std::system, running commands as the victim on click.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- giuspen / cherrytree: ≥ 0; ≤ 1.7.2 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 7.1 (high); CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 7 (high); CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.58% as of 2026-11-02; percentile 47.76%

- SSVC: exploitation poc; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-78

## Exploit evidence

- exploit: https://github.com/giuspen/cherrytree/issues/2945 (ADP: CISA-ADP)

## References

- https://github.com/giuspen/cherrytree/issues/2945 (CNA: VulnCheck; issue-tracking)

- https://github.com/giuspen/cherrytree (CNA: VulnCheck; product)

- https://github.com/giuspen/cherrytree/blob/v1.7.2/src/ct/ct_actions_others.cc#L381-L388 (CNA: VulnCheck; technical-description)

- https://github.com/giuspen/cherrytree/blob/v1.7.2/src/ct/ct_misc_utils.cc#L227-L247 (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/cherrytree-through-1.7.2-os-command-injection-via-custom-web-link-action (CNA: VulnCheck; third-party-advisory)

- https://github.com/giuspen/cherrytree/issues/2945 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-118692; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-118692; retrieved 2026-11-03; source updated Not reported

Revision: 174563e04d224de16ef527580e5537cf03a3c0eed7e377ceff01c2fa0d404e2e

Canonical: https://y2.dev/cve/CVE-2026-118692

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- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.