# CVE-2026-91146

## Summary

- **CVE ID:** CVE-2026-91146
- **Severity:** MEDIUM
- **CVSS Score:** 6.1 (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)
- **CWE:** CWE-79
- **Published:** Sep 14, 2026
- **Last Modified:** 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.

## Affected Products

- jointakahe — takahe (0)

## References

- [CNA](https://github.com/jointakahe/takahe/issues/728)
- [CNA](https://github.com/jointakahe/takahe)
- [CNA](https://github.com/jointakahe/takahe/blob/0.11.0/core/html.py)
- [CNA](https://www.vulncheck.com/advisories/takahe-through-0.11.0-cross-site-scripting-via-javascript-url-scheme)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.19%
- **EPSS Percentile:** 9.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._