Critical severity · published May 5, 2026
CVE-2026-38431
ERPNext v15.103.1 and before is vulnerable to Server-Side Template Injection (SSTI)
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
ERPNext v15.103.1 and before is vulnerable to Server-Side Template Injection (SSTI). An attacker with permission to create or edit email templates can inject template expressions that are executed on the server when the template is rendered.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ER
Erpnext · Frappe
through 15.103.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-38431
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-38431
Exploit
https://c0wking.hashnode.dev/ssti-in-erpnext-frappe-email-template-engine
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