# Koajs Koa vulnerabilities

Source: https://junglewise.ai/threats/technologies/koa  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/koa.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 6 vulnerabilities in Koajs Koa: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-27959, was published on 26 February 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 6 (0 critical, 0 exploited in the wild)

## About Koajs Koa

Lightweight Node.js web framework designed by the Express team.

## Latest Koajs Koa vulnerabilities

- [CVE-2026-27959: Koa Host header injection in ctx.hostname API](https://junglewise.ai/threats/cve-2026-27959-koa-host-header-injection-in-ctx-hostname-api) (high, CVSS 7.5, published 26 Feb 2026)
- [CVE-2025-62595: Koa open redirect via protocol-relative URLs in back redirect](https://junglewise.ai/threats/cve-2025-62595-koa-open-redirect-via-protocol-relative-urls-in-back-redirect) (medium, CVSS 4.3, published 21 Oct 2025)
- [CVE-2025-8129: Koa open redirect via referrer header](https://junglewise.ai/threats/cve-2025-8129-koa-open-redirect-via-referrer-header) (low, CVSS 3.1, published 29 Jul 2025)
- [Koa open redirect via Referrer header](https://junglewise.ai/threats/koa-open-redirect-via-referrer-header-0a2cc61b) (low, CVSS 3.1, published 25 Jul 2025)
- [CVE-2025-32379: Koajs Cross-Site Scripting in ctx.redirect()](https://junglewise.ai/threats/cve-2025-32379-koajs-cross-site-scripting-in-ctx-redirect) (low, CVSS 3.1, published 9 Apr 2025)
- [CVE-2025-25200: Koa inefficient regular expression in header parsing](https://junglewise.ai/threats/cve-2025-25200-koa-inefficient-regular-expression-in-header-parsing) (medium, CVSS 4, published 12 Feb 2025)

## Most severe Koajs Koa vulnerabilities

- [CVE-2026-27959: Koa Host header injection in ctx.hostname API](https://junglewise.ai/threats/cve-2026-27959-koa-host-header-injection-in-ctx-hostname-api) (high, CVSS 7.5, published 26 Feb 2026)
- [CVE-2025-62595: Koa open redirect via protocol-relative URLs in back redirect](https://junglewise.ai/threats/cve-2025-62595-koa-open-redirect-via-protocol-relative-urls-in-back-redirect) (medium, CVSS 4.3, published 21 Oct 2025)
- [CVE-2025-25200: Koa inefficient regular expression in header parsing](https://junglewise.ai/threats/cve-2025-25200-koa-inefficient-regular-expression-in-header-parsing) (medium, CVSS 4, published 12 Feb 2025)
- [CVE-2025-32379: Koajs Cross-Site Scripting in ctx.redirect()](https://junglewise.ai/threats/cve-2025-32379-koajs-cross-site-scripting-in-ctx-redirect) (low, CVSS 3.1, published 9 Apr 2025)
- [CVE-2025-8129: Koa open redirect via referrer header](https://junglewise.ai/threats/cve-2025-8129-koa-open-redirect-via-referrer-header) (low, CVSS 3.1, published 29 Jul 2025)
- [Koa open redirect via Referrer header](https://junglewise.ai/threats/koa-open-redirect-via-referrer-header-0a2cc61b) (low, CVSS 3.1, published 25 Jul 2025)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Koajs Koa vulnerabilities", https://junglewise.ai/threats/technologies/koa, 9 November 2026.