CVE-2025-1521

Source
https://cve.org/CVERecord?id=CVE-2025-1521
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-1521.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-1521
Published
2025-04-23T16:45:32Z
Modified
2026-10-28T02:30:40Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N CVSS Calculator
Summary
PostHog slack_incoming_webhook Server-Side Request Forgery Information Disclosure Vulnerability
Details

PostHog slack_incoming_webhook Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PostHog. Authentication is required to exploit this vulnerability.

The specific flaw exists within the processing of the slack_incoming_webhook parameter. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-25352.

Database specific
{
    "cna_assigner":  "zdi",
    "cwe_ids":  [
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1521.json"
}
References

Affected packages

Git / github.com/posthog/posthog

Affected ranges

Type
GIT
Repo
https://github.com/posthog/posthog
Events
Database specific
Show details
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "b8817c14065c23159dcf52849f0bdcd12516c43e"
                },
                {
                    "last_affected":  "b8817c14065c23159dcf52849f0bdcd12516c43e"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        },
        {
            "range":  [
                {
                    "fixed":  "6e8f035f9acd339c5ba87ba6ea40fc1ab3053d42"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

Other
b8817c14065c23159dcf52849f0bdcd12516c43e

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-1521.json"