🛡️ CVE-2026-34327 — partner-center

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2026-34327 is classified as CWE-610: Externally Controlled Reference to a Resource in Another Sphere. The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.

Affected software

CVE-2026-34327 is recorded against 1 package.

• partner-center

Timeline and source

Published on 7 May 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Other advisories for this package

partner-center has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-24303 (9.6 Critical, published 23 Apr 2026)
• CVE-2025-65041 (10.0 Critical, published 18 Dec 2025)
• CVE-2025-29814 (9.3 Critical, published 21 Mar 2025)
• CVE-2024-49035 (8.7 High, published 26 Nov 2024)

Same weakness in other software

These advisories are the same class of weakness (CWE-610: Externally Controlled Reference to a Resource in Another Sphere) in other software:

• CVE-2026-68562 (6.2 Medium, published 30 Jul 2026)
• CVE-2026-15583 (8.6 High, published 15 Jul 2026)
• CVE-2023-6569 (9.5 Critical, published 29 Jun 2026)
• CVE-2026-45760 (8.1 High, published 25 Jun 2026)
• CVE-2026-57301 (8.8 High, published 24 Jun 2026)
• CVE-2026-12788 (6.3 Medium, published 21 Jun 2026)
• CVE-2026-0522 (8.8 High, published 1 Apr 2026)
• CVE-2026-28722 (7.3 High, published 6 Mar 2026)

Details

Affected Packages

References