@cedarjs/api-server (>=1.0.0-canary.12281, <=9.0.0-canary.1784), @cedarjs/cli (>=1.0.0-canary.12281, <=9.0.0-canary.1784) +23 more potentially affected by CVE-2026-33805 via @fastify/http-proxy (>=11.1.2, <=11.4.3)

@fastify/http-proxy NPM version =11.1.2, =1.0.0-canary.12281, =1.0.0-canary.12281, =1.0.0-canary.12281, =1.0.0-canary.12281, =1.0.0-canary.12281, =3.0.0-alpha-1, =0.1.0, =1.0.1, =0.0.1, =1.0.0, =1.0.1, =1.4.4, =1.0.50, =0.0.1, =0.1.65 and more Source cves: CVE-2026-33805 Source advisory:...

GHSA-GWHP-PF74-VJ37 Fastify's connection header abuse enables stripping of proxy-added headers

Summary @fastify/reply-from and @fastify/http-proxy process the client's Connection header after the proxy has added its own headers via rewriteRequestHeaders. This allows attackers to retroactively strip proxy-added headers like access control or identification headers from upstream requests by...

Fastify's connection header abuse enables stripping of proxy-added headers

Summary @fastify/reply-from and @fastify/http-proxy process the client's Connection header after the proxy has added its own headers via rewriteRequestHeaders. This allows attackers to retroactively strip proxy-added headers like access control or identification headers from upstream requests by...

EUVD-2026-22877

Fastify's connection header abuse enables stripping of proxy-added headers...

PT-2026-33321

Name of the Vulnerable Software and Affected Versions @fastify/static versions 8.0.0 through 9.1.0 Description Path traversal occurs when directory listing is enabled via the list option. The dirList.path function resolves directories outside the configured static root using path.join without a...

PT-2026-33320

Name of the Vulnerable Software and Affected Versions @fastify/middie versions prior to 9.3.2 Description Inherited middleware is not registered directly on child plugin engine instances. When authentication middleware is registered in a parent scope and child plugins are registered with...

Fastify-Static security vulnerabilities

Fastify-Static is an open-source plugin developed by Fastify. It is used to deliver static files as quickly as possible. Versions of Fastify-Static from 8.0.0 to 9.1.0 contain security vulnerabilities. These vulnerabilities stem from decoding percent-encoded path separators, which may allow...

CVE-2026-33804: Interpretation Conflict

@fastify/middie versions 9.3.1 and earlier are vulnerable to middleware bypass when the deprecated Fastify ignoreDuplicateSlashes option is enabled. The middleware path matching logic does not account for duplicate slash normalization performed by Fastify's router, allowing requests with duplicat...

CVE-2026-6410: Improper Limitation of a Pathname to a Restricted Directory

@fastify/static versions 8.0.0 through 9.1.0 allow path traversal when directory listing is enabled via the list option. The dirList.path function resolves directories outside the configured static root using path.join without a containment check. A remote unauthenticated attacker can obtain...

CVE-2026-6270: Interpretation Conflict

@fastify/middie versions 9.3.1 and earlier do not register inherited middleware directly on child plugin engine instances. When a Fastify application registers authentication middleware in a parent scope and then registers child plugins with @fastify/middie, the child scope does not inherit the...

CVE-2026-6414: Improper Handling of URL Encoding (Hex Encoding)

@fastify/static versions 8.0.0 through 9.1.0 decode percent-encoded path separators %2F before filesystem resolution, while Fastify's router treats them as literal characters. This mismatch allows attackers to bypass route-based middleware or guards that protect files served by @fastify/static. F...

Fastify-Static security vulnerabilities

Fastify-Static is an open-source plugin developed by Fastify. It is used to deliver static files as quickly as possible. Versions of Fastify-Static from 8.0.0 to 9.1.0 have security vulnerabilities; these vulnerabilities stem from path traversal when directory listings are enabled, which may lead...

@fastify/middie security vulnerabilities

@fastify/middie is an open-source middleware engine developed by Fastify. Versions of @fastify/middie 9.3.1 and earlier contained security vulnerabilities. These vulnerabilities occurred when the deprecated ignoreDuplicateSlashes option was enabled, as the middleware’s path matching logic did not...

PT-2026-33323

Name of the Vulnerable Software and Affected Versions @fastify/middie versions prior to 9.3.2 Description A middleware bypass exists when the deprecated ignoreDuplicateSlashes option is enabled. The middleware path matching logic fails to account for duplicate slash normalization performed by the...

@fastify/middie security vulnerabilities

@fastify/middie is an open-source middleware engine developed by Fastify. Versions of @fastify/middie prior to 9.3.1 contained security vulnerabilities. These vulnerabilities stemmed from the lack of registration of inherited middleware on sub-plugin engine instances, which could lead to bypassin...

CVE-2026-33806

A flaw was found in Fastify. A remote attacker could exploit this vulnerability by prepending a space to the Content-Type header in a request. This action bypasses the application's schema validation, allowing the attacker to submit data that would otherwise be rejected. This could lead to...

EUVD-2026-22818

Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header...

GHSA-247C-9743-5963 Fastify has a Body Schema Validation Bypass via Leading Space in Content-Type Header

Summary A validation bypass vulnerability exists in Fastify v5.x where request body validation schemas specified via schema.body.content can be completely circumvented by prepending a single space character \x20 to the Content-Type header. The body is still parsed correctly as JSON or any other...

@amedia/brick-mcp (>=0.0.0-vBRAND-20260313141110, <=1.0.3), @area15/ticket-component (0.1.0) +226 more potentially affected by CVE-2025-32442 +1 more via fastify (>=5.3.2, <=5.8.4)

fastify NPM version =5.3.2, =0.0.0-vBRAND-20260313141110, =2.0.1, =1.1.1, =0.6.2, =0.1.1, =0.1.1, =0.6.0, =0.1.1, =0.0.35, =0.0.82, =0.0.1, =0.0.6, =0.1.68, =0.1.0, =0.8.2 and more Source cves: CVE-2025-32442, CVE-2026-33806 Source advisory: OSV:GHSA-247C-9743-5963...

@amedia/brick-mcp (>=0.0.0-vBRAND-20260313141110, <=1.0.3), @area15/ticket-component (0.1.0) +226 more potentially affected by CVE-2025-32442 +2 more via fastify (>=5.3.2, <=5.8.4)

fastify NPM version =5.3.2, =0.0.0-vBRAND-20260313141110, =2.0.1, =1.1.1, =0.6.2, =0.1.1, =0.1.1, =0.6.0, =0.1.1, =0.0.35, =0.0.82, =0.0.1, =0.0.6, =0.1.68, =0.1.0, =0.8.2 and more Source cves: CVE-2025-32442, CVE-2026-25223, CVE-2026-33806 Source advisory: GHSA-247C-9743-5963...