DEBIAN-CVE-2026-75509

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Source

https://security-tracker.debian.org/tracker/CVE-2026-75509

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75509.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-75509

Upstream

CVE-2026-75509

Published

2026-08-24T20:17:19Z

Modified

2026-09-10T08:47:23Z

Severity

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

Summary

[none]

Details

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption (JOSE) standards. Prior to version 1.7.3, JWTClaimsRegistry applies membership matching to list-valued iss and sub claims, allowing an array-valued iss that contains the expected issuer to pass an intended equality check and enabling issuer-validation bypass. This issue is fixed in version 1.7.3.

References

https://security-tracker.debian.org/tracker/CVE-2026-75509

Affected packages

Debian:13 / joserfc

Package

Name: joserfc
Purl: pkg:deb/debian/joserfc?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.1.0-1

1.2.0-1

1.2.2-1

1.3.1-1

1.3.2-1

1.3.4-1

1.4.0-1

1.4.1-1

1.4.3-1

1.5.0-1

1.6.0-1

1.6.1-1

1.6.2-1

1.6.3-1

1.6.4-1

1.6.5-1

1.6.8-1

1.7.0-1

1.7.1-1

1.7.2-1

1.7.3-1

1.7.4-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-75509.json"

Debian:14 / joserfc