CVE-2026-121545

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    CVE-2026-121545

    Published: 3 Nov 2026Last Modified: 8 Nov 2026

    Summary: Dreeve before 5.8.0 Missing Authentication in Strava Webhook POST Handler

    Details: Dreeve before 5.8.0 contains a missing authentication vulnerability in StravaWebhookRequestHandler::handleEvent that allows unauthenticated attackers to forge Strava webhook events without signature, verify-token or owner_id checks. Attackers can send forged delete events with a known public Strava activity id to the webhook URL, causing permanent deletion of imported activities and their streams.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121545.json, https://nvd.nist.gov/vuln/detail/CVE-2026-121545, https://www.vulncheck.com/advisories/dreeve-before-5.8.0-missing-authentication-in-strava-webhook-post-handler, https://github.com/dreeveapp/dreeve/issues/2935, https://github.com/dreeveapp/dreeve/commit/1e88f7664a95ecbffd299195f4730a60fcd3181a, https://github.com/dreeveapp/dreeve/pull/2936, https://github.com/dreeveapp/dreeve, https://github.com/dreeveapp/dreeve/blob/v5.7.0/src/Console/Strava/ProcessStravaWebhooksConsoleCommand.php, https://github.com/dreeveapp/dreeve/blob/v5.7.0/src/Controller/Strava/StravaWebhookRequestHandler.php#L64-L80

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -59b13e59a84c7f7e7f063e1f67a707474252b9bb

    Affected versions

    v5.7.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-121545 | CVE-DB