Vulnerability · Published Sep 14, 2026 · Assigned by VulnCheck
CVE-2026-91146Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Scheme
Medium 6.1
In plain English
A medium-severity cross-site scripting in takahe from jointakahe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 72.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jointakahe | takahe | 0 – through 0.11.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- GitHub Issue #728 issue-tracking
- https://github.com/jointakahe/takahe product
- core/html.py at 0.11.0 technical-description
- VulnCheck Advisory: Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Scheme third-party-advisory