TI-2023-14035 Aliases CVE-2023-29827 GHSA-j5pp-6f4w-r5r6

ejs v3.1.9 is vulnerable to server-side template injection.

HIGH 82CWE-74Published 2023-05-04 · Updated 2025-01-29

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.05552 92nd percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Total

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:ejs:ejs::::::node.js::*	3.1.9	Vulnerable	Ejs

cpe:2.3:a:ejs:ejs:*:*:*:*:*:node.js:*:* Versions 3.1.9 Vulnerable ·Ejs

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-29827
2026-10-03 Alias added: GHSA-j5pp-6f4w-r5r6

References

Exploit 1

https://github.com/mde/ejs/issues/720

Advisory 1

https://github.com/mde/ejs/blob/main/SECURITY.md#out-of-scope-vulnerabilities

TI-2022-11633 The ejs (aka Embedded JavaScript templates) package 3.1.6 for Node.js allows server-side… CVSS 3.1CRITICAL 9.8
TI-2017-14544 nodejs ejs versions older than 2.5.3 is vulnerable to remote code execution due to weak… CVSS 3.0CRITICAL 9.8
TI-2017-14510 nodejs ejs version older than 2.5.5 is vulnerable to a denial-of-service due to weak… CVSS 3.0HIGH 7.5
TI-2017-14509 nodejs ejs version older than 2.5.5 is vulnerable to a Cross-site-scripting in the… CVSS 3.0MEDIUM 6.1

Sources

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