CVE-2026-91146
Takahe through 0.11.0 Cross-Site Scripting via javascript: URL Scheme
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.
INFO
Published Date :
Sept. 14, 2026, 9:45 p.m.
Last Modified :
Sept. 14, 2026, 9:45 p.m.
Remotely Exploit :
Yes !
Source :
VulnCheck
Affected Products
The following products are affected by CVE-2026-91146
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 |
Solution
- Update Takahe to the latest version.
- Implement strict URL scheme validation.
- Sanitize federated post content and profile summaries.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-91146 vulnerability anywhere in the article.