CVE-2023-36474Network attack vector

Client-side code execution via default dangling CNAME

Published Jun 28, 2023 · Updated Nov 6, 2024

Subdomain takeover in ProjectDiscovery Interactsh before 1.0.0 allows remote attackers to run client-side code through the app subdomain. The DNS handler returns a CNAME to projectdiscovery.github.io for that subdomain by default, leaving the name claimable when no GitHub Pages site is configured. Exploitation requires a self-hosted domain without the web client and user interaction with the attacker-controlled subdomain; impact is confined to browser-side code execution.

CVSS severity8.2
High
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Subdomain takeover in ProjectDiscovery Interactsh before 1.0.0 allows remote attackers to run client-side code through the app subdomain. The DNS handler returns a CNAME to projectdiscovery.github.io for that subdomain by default, leaving the name claimable when no GitHub Pages site is configured. Exploitation requires a self-hosted domain without the web client and user interaction with the attacker-controlled subdomain; impact is confined to browser-side code execution.

The record

CVE
CVE-2023-36474
Published
Jun 28, 2023
Updated
Nov 6, 2024
Vendor
ProjectDiscovery
Product
Interactsh
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.0.0
  2. Affected versionversion=< 1.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ProjectDiscovery · Interactshversion=0 <1.0.0; version=< 1.0.0

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.2GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo