How severe is CVE-2026-38431?

CVE-2026-38431 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-38431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-38431?

CVE-2026-38431 affects Frappe Erpnext. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-38431?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-38431 have an EU (EUVD) identifier?

Yes. CVE-2026-38431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27402.

When was CVE-2026-38431 published?

CVE-2026-38431 was published on 2026-05-05 and last updated on 2026-06-17.

CVE-2026-38431

CVE-2026-38431 is a critical-severity vulnerability in Frappe Erpnext with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27402
Weakness: CWE-94
Affected product: Frappe Erpnext
Published: 2026-05-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-38431?: 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.
How severe is CVE-2026-38431?: CVE-2026-38431 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-38431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-38431?: CVE-2026-38431 affects Frappe Erpnext. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-38431?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-38431 have an EU (EUVD) identifier?: Yes. CVE-2026-38431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27402.
When was CVE-2026-38431 published?: CVE-2026-38431 was published on 2026-05-05 and last updated on 2026-06-17.

References

https://c0wking.hashnode.dev/ssti-in-erpnext-frappe-email-template-engine

Affected products (1)

cpe:2.3:a:frappe:erpnext:*:*:*:*:*:*:*:*

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