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Vulnerability record · CVE-2023-29827 · published 4 May 2023

CVE-2023-29827: Ejs injection vulnerability

Ejs · Ejs

ejs v3.1.9 is vulnerable to server-side template injection. If the ejs file is controllable, template injection can be implemented through the configuration settings of the closeDelimiter parameter. NOTE: this is disputed by the vendor because the render function is not intended to be used with untrusted input.

9.8 CVSS 3.1 Critical EPSS 5.6% · top 7.4% CWE-74 · Injection
9.8CVSS 3.1 base score
5.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

ejs v3.1.9 is vulnerable to server-side template injection. If the ejs file is controllable, template injection can be implemented through the configuration settings of the closeDelimiter parameter. NOTE: this is disputed by the vendor because the render function is not intended to be used with untrusted input.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/mde/ejs/blob/main/SECURITY.md#out-of-scope-vulnerabilities Third Party Advisory
https://github.com/mde/ejs/issues/720 ExploitIssue TrackingPatch
https://github.com/mde/ejs/blob/main/SECURITY.md#out-of-scope-vulnerabilities Third Party Advisory
https://github.com/mde/ejs/issues/720 ExploitIssue TrackingPatch

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-29827), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.