What is the CVSS score of CVE-2025-1520?

CVE-2025-1520 has a CVSS 3.1 base score of 8.0 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Which versions of Posthog are affected by CVE-2025-1520?

CVE-2025-1520 presents notable security risk, a SQL injection vulnerability rated CVSS 8.0.. A patch is available.

How to fix or mitigate CVE-2025-1520?

Within 7 days: Identify all affected systems and apply vendor patches promptly. Validate that input sanitization is in place for all user-controlled parameters.

Posthog CVE-2025-1520

HIGH

SQL Injection (CWE-89)

2025-04-23 zdi-disclosures@trendmicro.com

RCE SQLi Posthog

8.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.0 HIGH

AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 18:38 vuln.today

Patch released

Mar 28, 2026 - 18:38 nvd

Patch available

CVE Published

Apr 23, 2025 - 17:16 nvd

HIGH 8.0

DescriptionCVE.org

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.

AnalysisAI

PostHog ClickHouse Table Functions SQL Injection Remote Code Execution Vulnerability. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity.

Technical ContextAI

This vulnerability is classified as SQL Injection (CWE-89), which allows attackers to execute arbitrary SQL commands against the database. 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. Affected products include: Posthog.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Use parameterized queries/prepared statements. Never concatenate user input into SQL. Apply least-privilege database permissions.