PrestaShop before 8.2.9 and 9.2.1 contains an authorization flaw in the Webservice API that allows an attacker holding a key restricted to…
CVE-2026-71531
PrestaShop before 8.2.9 and 9.2.1 contains an authorization flaw in the Webservice API that allows an attacker holding a key restricted to one shop to act on data of every shop by submitting requests with idshop=all or idshopgroup=N, which expand the shop context without validating the key's actual shop associations and cause shopHasRight() to evaluate the expanded set as a disjunction. Attackers can exploit this flaw via classes/webservice/WebserviceRequest.php to read, modify, or delete data belonging to shops they are not authorized for, including full customer records such as email addresses, securekey, and password hashes across the installation.
Assessment
- CVSS
- 8.6 (v4.0)
- Severity
- High
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 13 November 2026
- Last updated
- 13 November 2026
- Affected
- PrestaShop · PrestaShop
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
At the source
References
- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-3f36-4qv4-vfgh
- https://github.com/PrestaShop/PrestaShop/releases/tag/9.2.1
- https://github.com/PrestaShop/PrestaShop/releases/tag/8.2.9
- https://www.vulncheck.com/advisories/prestashop-webservice-api-authorization-bypass-via-id-shop-parameter
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