DEBIAN-CVE-2026-75975

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Source

https://security-tracker.debian.org/tracker/CVE-2026-75975

Import Source

https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75975.json

JSON Data

https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-75975

Upstream

CVE-2026-75975

Published

2026-08-24T10:16:40Z

Modified

2026-09-08T04:00:08Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator

Summary

[none]

Details

fast-uri is a URI parser for Node.js. Its custom parser for bracketed IPv6 literals does not validate the complete IPv6 grammar, so invalid trailing text in an authority can be silently discarded and a malformed attacker-controlled host is turned into a different valid IPv6 destination. For example, a bracketed literal with invalid trailing characters is normalized to the unspecified address, which a Node HTTP client then connects to a local service over loopback, and other malformed literals collapse to private-range addresses. No error is set on the parsed result, so an application checking the error field cannot detect the rewrite. An application that normalizes untrusted URLs before outbound requests, redirects, proxy routing, or address-policy enforcement can be redirected to a local or private IPv6 target, giving a server-side request forgery and address-policy bypass primitive. The affected versions are 2.3.1 up to but not including 2.4.5, 3.0.0 up to but not including 3.1.6, and 4.0.0 up to but not including 4.1.3. The issue is fixed in 2.4.5, 3.1.6, and 4.1.3, which validate bracketed IP literals against the full grammar and mark malformed literals as authority errors. Users should upgrade to a patched version.

References

https://security-tracker.debian.org/tracker/CVE-2026-75975

Affected packages

Debian:13 / node-ajv

Package

Name: node-ajv
Purl: pkg:deb/debian/node-ajv?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.12.0~ds+~2.1.1-5

8.17.1~ds+~3.0.1+~3.1.0-1

8.17.1~ds+~3.0.1+~3.1.0-2

8.17.1~ds+~3.0.1+~3.1.0-3

8.17.1~ds+~3.0.1+~3.1.0-4

8.18.0~ds+~cs6.1.1-1

8.18.0~ds+~cs6.1.1-2

8.20.0~ds+~cs6.1.3-1

8.20.0~ds+~cs7.1.2-1

8.20.0~ds+~cs7.1.3-1

8.20.0~ds+~cs7.1.3-2

8.20.0~ds+~cs7.1.3-3

8.20.0~ds+~cs7.1.4-1

8.20.0~ds+~cs7.1.5-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75975.json"

Debian:14 / node-ajv