Server-side template injection in Frappe Framework via message fields
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1336.
Summary
Frappe Framework from 16.0.0 before 16.21.0 and before 15.111.0 contains a server-side template injection flaw. User-controlled message fields are rendered as templates without neutralization, enabling CWE-1336. An authenticated attacker holding a common operational role can inject template expressions that the server evaluates in an unrestricted context.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
Description from the CNA
Frappe Framework before 15.111.0 and 16.x before 16.21.0 contains a server-side template injection vulnerability because user-controlled message fields are rendered as templates without neutralization. An authenticated attacker holding a common operational role can inject template expressions that the server evaluates in an unrestricted context.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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
Remediation
Upgrade frappe to 16.21.0 for the 16.x branch and to 15.111.0 for the 15.x branch.
Written with Claude Haiku 5.5 from the sources below · 2026-11-03
- Fix · CNA frappe (frappe) Fixed in 16.21.0
- Fix · CNA frappe (frappe) Fixed in 15.111.0
Timeline
- 2026-10-29 Threatist record created from CVE-2026-119144
- 2026-10-29 Alias added: GHSA-38wh-wgq2-g439
- 2026-10-31 Priority changed: MEDIUM → LOW
- 2026-11-03 CISA SSVC decision points changed
References
More frappe vulnerabilities
- TI-2026-28140 ERPNext v15.103.1 and before is vulnerable to Server-Side Template Injection (SSTI). CVSS 3.1CRITICAL 9.8
- TI-2025-40873 An issue was discovered in Frappe ERPNext through 15.89.0. CVSS 3.1CRITICAL 9.8
- TI-2025-40872 An issue was discovered in Frappe ERPNext through 15.89.0. CVSS 3.1CRITICAL 9.8
- TI-2025-40871 A Server-Side Template Injection (SSTI) vulnerability exists in the Frappe ERPNext… CVSS 3.1CRITICAL 9.8
- TI-2025-32462 In Frappe ERPNext 15.57.5, the function get_rfq_containing_supplier() at… CVSS 3.1HIGH 8.2
- TI-2025-32461 In Frappe ERPNext 15.57.5, the function get_stock_balance_for() at… CVSS 3.1HIGH 8.2
Sources
- CVE-2026-119144 · CVE Program
- CVE-2026-119144 · NVD
- FIRST EPSS
- GHSA-38wh-wgq2-g439 · GitHub Advisory Database · CC BY 4.0
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