CVE-2023-46746

CVE-2023-46746 is a medium-severity vulnerability in Posthog with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

• Severity: Medium (CVSS 3.x base score 4.8)
• EPSS exploit prediction: 0% (30th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-918
• Affected product: Posthog
• Published: 2023-12-01
• Last modified: 2026-06-17

Description

PostHog provides open-source product analytics, session recording, feature flagging and A/B testing that you can self-host. A server-side request forgery (SSRF), which can only be exploited by authenticated users, was found in Posthog. Posthog did not verify whether a URL was local when enabling webhooks, allowing authenticated users to forge a POST request. This vulnerability has been addressed in `22bd5942` and will be included in subsequent releases. There are no known workarounds for this vulnerability.

Frequently asked questions

What is CVE-2023-46746?

PostHog provides open-source product analytics, session recording, feature flagging and A/B testing that you can self-host. A server-side request forgery (SSRF), which can only be exploited by authenticated users, was found in Posthog. Posthog did not verify whether a URL was local when enabling webhooks, allowing authenticated users to forge a POST request. This vulnerability has been addressed in `22bd5942` and will be included in subsequent releases. There are no known workarounds for this vulnerability.

How severe is CVE-2023-46746?

CVE-2023-46746 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-46746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-46746?

CVE-2023-46746 affects Posthog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-46746?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-46746 published?

CVE-2023-46746 was published on 2023-12-01 and last updated on 2026-06-17.

References

• https://github.com/PostHog/posthog/commit/22bd5942638d5d9bc4bd603a9bfe8f8a95572292
• https://github.com/PostHog/posthog/security/advisories/GHSA-wqqw-r8c5-j67c
• https://securitylab.github.com/advisories/GHSL-2023-185_posthog_posthog/

Affected products (1)

• cpe:2.3:a:posthog:posthog:*:*:*:*:*:*:*:*

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