CVE-2025-1520 json
PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability
published 2025-04-23 18 mo ago modified 2026-06-17 4 mo ago also GHSA-v64v-fq96-c5wv , EUVD-2025-12167
- cvss
- 7.1
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of PostHog. Authentication is required to exploit this vulnerability.
The specific flaw exists within the implementation of the SQL parser. The issue results from the lack of proper validation of a user-supplied string before using it to construct SQL queries. An attacker can leverage this vulnerability to execute code in the context of the database account. Was ZDI-CAN-25350.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 7.1 | CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.0 | CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.0 | 7.1 | CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @posthog/plugin-server | <=1.10.7 |
no fix listed |
Affected products
- PostHog PostHog
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
References
-
github.com
/PostHog/posthog/commit/6e8f035f9acd339c5ba87ba6ea40fc1ab3053d42
vendor-advisory, web, patch
-
zerodayinitiative.com
/advisories/ZDI-25-099/
third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2025-1520
advisory
-
github.com
/PostHog/plugin-server
package
-
zerodayinitiative.com
/advisories/ZDI-25-099
web
Sources
- CVE List CVE-2025-1520
- GitHub Advisory GHSA-v64v-fq96-c5wv
- NVD CVE-2025-1520
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