Is CVE-2026-45307 actively exploited?

No active exploitation of CVE-2026-45307 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45307 be exploited remotely?

Yes. CVE-2026-45307 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-45307?

CVE-2026-45307 has a CVSS score of 6.1 (MEDIUM).

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MEDIUM

CVE-2026-45307

CWE-601Published: May 28, 2026· Updated: Jun 1, 2026

6.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.1th

Official Description

Speakr is a personal, self-hosted web application designed for transcribing audio recordings. Prior to 0.8.20-alpha, the is_safe_url() helper used to validate post-login redirect targets applied urljoin(request.host_url, target) before parsing, while the controller passed the raw target to redirect(). A scheme-relative input such as ////evil.com resolved to a same-host URL during validation but was emitted verbatim in the Location header, where the browser interpreted it as a network-path-relative redirect to an attacker-controlled host. This vulnerability is fixed in 0.8.20-alpha.

NVD Source

Technical Analysis

CVE-2026-45307 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.