Vulnerability · Published Oct 28, 2026 · Assigned by VulnCheck

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

High 7.0

In plain English

A high-severity OS command injection in cherrytree from giuspen. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).

Severity (CVSS 3.1)7.0High

Exploit odds (30 days)0.6%top 52.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	cherrytree	no fix listed	DEBIAN-CVE-2026-118692
Debian:13	cherrytree	no fix listed	DEBIAN-CVE-2026-118692
Debian:14	cherrytree	no fix listed	DEBIAN-CVE-2026-118692
Ubuntu:22.04:LTS	cherrytree	no fix listed	UBUNTU-CVE-2026-118692
Ubuntu:24.04:LTS	cherrytree	no fix listed	UBUNTU-CVE-2026-118692
Ubuntu:26.04:LTS	cherrytree	no fix listed	UBUNTU-CVE-2026-118692
Ubuntu:26.10	cherrytree	no fix listed	UBUNTU-CVE-2026-118692

Affected products (as reported)

Vendor	Product	Versions
giuspen	cherrytree	0 – through 1.7.2

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References

GitHub Issue #2945 issue-tracking
https://github.com/giuspen/cherrytree product
https://github.com/giuspen/cherrytree/blob/v1.7.2/src/ct/ct_actions_others.cc#L381-L388 technical-description
https://github.com/giuspen/cherrytree/blob/v1.7.2/src/ct/ct_misc_utils.cc#L227-L247 technical-description
VulnCheck Advisory: CherryTree through 1.7.2 OS Command Injection via Custom Web Link Action third-party-advisory