CVE Explorer

CVE-2026-15631

Impact: @fastify/http-proxy versions from 9.4.0 up to and including 11.5.0 fail to validate the resolved WebSocket destination path against the configured rewrite prefix. The WebSocket routing path in WebSocketProxy.findUpstream resolves the destination via the WHATWG URL constructor, which collapses dot segments, so a crafted upgrade request with path traversal sequences can escape the rewrite prefix and reach upstream endpoints that were not meant to be exposed by the proxy. This is a variant

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6007d716c89d2f2e431f1b3131a3becf3b9608a586e84c44b27625cc662d8f5c

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","packageURL":"pkg:npm/@fastify/http-proxy","product":"@fastify/http-proxy","vendor":"@fastify/http-proxy","versions":[{"lessThan":"11.6.0","status":"affected","version":"9.4.0","versionType":"semver"},{"status":"unaffected","version":"11.6.0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:6dc11e64b1ab06ce1d97b77c0fb240af9d6e3621ac71c4a3cc40d2c4b156fc75 · sha256:012eb56b494b3e72… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:6dc11e64b1ab06ce1d97b77c0fb240af9d6e3621ac71c4a3cc40d2c4b156fc75 · sha256:012eb56b494b3e72… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:6dc11e64b1ab06ce1d97b77c0fb240af9d6e3621ac71c4a3cc40d2c4b156fc75 · sha256:012eb56b494b3e72… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"url":"https://cna.openjsf.org/security-advisories.html"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6dc11e64b1ab06ce1d97b77c0fb240af9d6e3621ac71c4a3cc40d2c4b156fc75 · sha256:012eb56b494b3e72… · /containers/cna/references/1

{"url":"https://github.com/fastify/fastify-http-proxy/security/advisories/GHSA-7hrw-592w-9wh2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6dc11e64b1ab06ce1d97b77c0fb240af9d6e3621ac71c4a3cc40d2c4b156fc75 · sha256:012eb56b494b3e72… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer