CVE-2026-91146
Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Scheme
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 14, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 14, 2026
Description
Takahe through 0.11.0 fails to restrict URL schemes in link hrefs within federated post content and profile summaries, allowing remote actors to inject javascript: links. Attackers can deliver federated content with malicious javascript: hrefs that execute in the instance origin when clicked, enabling session hijacking or impersonation of viewers.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N | VulnCheck |
| 3.1 | 6.1 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
takahejointakahe |
|
References
- GitHub Issue #728issue-tracking
- https://github.com/jointakahe/takaheproduct
- core/html.py at 0.11.0technical-description
- VulnCheck Advisory: Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Schemethird-party-advisory
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