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TI-2026-82218 Aliases CVE-2026-118692GHSA-3v3v-qqf5-5rqr

OS command injection in CherryTree via custom web link action

Priority HIGH 66CWE-78Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

CherryTree through 1.7.2 contains an OS command injection flaw in CtActions::link_clicked (CWE-78). When the non-default Custom Web Link Clicked Action option is enabled, a crafted document whose web link contains unquoted shell metacharacters is passed to std::system, so commands run as the victim when the link is clicked. A local attacker needs a user to open the document and click the link, and the CVSS 4.0 vector reports high impact to the confidentiality, integrity and availability of the victim system.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00581 48th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
giuspencherrytreeup to 1.7.2—No fix listedCNA
  • cherrytree Vendorgiuspen Affected up to 1.7.2 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for CherryTree. Disable the Custom Web Link Clicked Action option, which is not the default setting, to avoid the flaw.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-118692
  2. 2026-10-29 Alias added: GHSA-3v3v-qqf5-5rqr
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-11-03 CISA SSVC decision points changed
  5. 2026-11-03 Priority changed: LOW → HIGH

References

Other 4

  • TI-2026-82219 Path traversal in CherryTree lets crafted documents embed local files CVSS 4.0MEDIUM 5.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences