What’s Vulnerable › Vulnerabilities

CVE-2026-45307: Speakr: Open redirect in is_safe_url via parser mismatch on next parameter

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-10-26
• Weakness: CWE-601

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.

Affected products

• murtaza-nasir speakr: before 0.8.20-alpha

References

• https://github.com/murtaza-nasir/speakr/security/advisories/GHSA-5cpp-mqgh-4c38
• https://github.com/murtaza-nasir/speakr/security/advisories/GHSA-5cpp-mqgh-4c38

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