CVE-2023-46746Network attack vector

Authenticated SSRF via unchecked webhook test URL

Published Dec 1, 2023 · Updated Aug 2, 2024

Server-side request forgery in PostHog 1.43.1 and earlier allows remote authenticated users to send POST requests from the server. The test_slack_webhook method in posthog/api/user.py passes the user-controlled webhook value directly to requests.post without rejecting local destinations. Any authenticated account that can invoke the webhook test can make the PostHog host issue a POST to an internal or otherwise server-reachable URL.

CVSS severityUnavailable
Unscored
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Server-side request forgery in PostHog 1.43.1 and earlier allows remote authenticated users to send POST requests from the server. The test_slack_webhook method in posthog/api/user.py passes the user-controlled webhook value directly to requests.post without rejecting local destinations. Any authenticated account that can invoke the webhook test can make the PostHog host issue a POST to an internal or otherwise server-reachable URL.

The record

CVE
CVE-2023-46746
Published
Dec 1, 2023
Updated
Aug 2, 2024
Vendor
PostHog
Product
PostHog
Classifications
CWE-918, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

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

  1. Affected versionversion=<=1.43.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PostHog · PostHogversion=<=1.43.1

Published CVSS scores

No CVSS assessment is available in this record.

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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

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Your stack

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