Speakr: Open redirect in is_safe_url via parser mismatch on next parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-601.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| murtaza-nasir | speakr | before 0.8.20-alpha | 0.8.20-alpha | Patch available | CNA |
- speakr Vendormurtaza-nasir Affected before 0.8.20-alpha Fixed in 0.8.20-alpha Patch available CNA
Remediation
- Fix · CNA speakr (murtaza-nasir) Fixed in 0.8.20-alpha
Timeline
- 2026-10-02 Threatist record created from CVE-2026-45307
More murtaza-nasir vulnerabilities
- TI-2026-39356 Speakr: CSRF bypass via unauthenticated API token parameter in csrf_exempt_for_api_tokens hook CVSS 3.1HIGH 7.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences