CVE-2022-29078Public exploitNetwork attack vector

Remote code execution via outputFunctionName injection

Published Apr 25, 2022 · Updated Aug 3, 2024

Server-side template injection in ejs 3.1.6 for Node.js allows remote attackers to execute arbitrary OS commands via crafted view options. The renderFile settings[view options][outputFunctionName] value is copied into generated template source without identifier validation, so injected syntax runs when the template compiles. Exploitation requires a remotely reachable application that passes attacker-controlled view options to ejs; successful attacks execute with the Node.js process privileges and can read, alter, or disrupt accessible resources.

CVSS severity9.8
Critical
EPSS probability32.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side template injection in ejs 3.1.6 for Node.js allows remote attackers to execute arbitrary OS commands via crafted view options. The renderFile settings[view options][outputFunctionName] value is copied into generated template source without identifier validation, so injected syntax runs when the template compiles. Exploitation requires a remotely reachable application that passes attacker-controlled view options to ejs; successful attacks execute with the Node.js process privileges and can read, alter, or disrupt accessible resources.

The record

CVE
CVE-2022-29078
Published
Apr 25, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-74, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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