CVE-2026-118692

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.

References

• https://github.com/giuspen/cherrytree
• https://github.com/giuspen/cherrytree/blob/v1.7.2/src/ct/ct_actions_others.cc#L381-L388
• https://github.com/giuspen/cherrytree/blob/v1.7.2/src/ct/ct_misc_utils.cc#L227-L247
• https://github.com/giuspen/cherrytree/issues/2945
• https://www.vulncheck.com/advisories/cherrytree-through-1.7.2-os-command-injection-via-custom-web-link-action