Auth bypass in Coreunion Coreshop
CVE-2026-108696
CoreShop through 1.5.5 contains an authorization bypass vulnerability in the OrderController that allows authenticated customers to act on other customers' orders by supplying user-controlled ids. Attackers can omit the data field in OrderConfirm or supply another reshipId to SendReship to confirm receipt of others' orders and overwrite return tracking details.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/SkVjopPsGe (third-party-advisory)
- github.com/CoreUnion/CoreShop/blob/ca7408b025bc5f3fd5957a79618ffe991c4e91ab/Cor… (technical-description)
- github.com/CoreUnion/CoreShop/blob/ca7408b025bc5f3fd5957a79618ffe991c4e91ab/Cor… (technical-description)
- github.com/CoreUnion/CoreShop/blob/ca7408b025bc5f3fd5957a79618ffe991c4e91ab/Cor… (technical-description)
- github.com/CoreUnion/CoreShop (product)
- www.vulncheck.com/advisories/coreshop-through-1.5.5-authorization-bypass-via-or… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108696?
- CVE-2026-108696 is a medium-severity vulnerability in Coreunion Coreshop, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-11.
- How severe is CVE-2026-108696?
- Medium severity. CVSS v3 base score is 4.3 out of 10.