CVE-2026-71531
PrestaShop Webservice API Authorization Bypass via id_shop Parameter
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 id_shop=all or id_shop_group=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, secure_key, and password hashes across the installation.
Fixes and workarounds
Fix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: VulnCheckAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| PrestaShop PrestaShop PrestaShop/PrestaShop
github |
≥ 0; < 8.2.9 (affected, semver) ≥ 9.0.0; < 9.2.1 (affected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.6 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 8.1 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | CNA: VulnCheck |
| 4.0 / 8.6 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 8.1 high |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-3f36-4qv4-vfghCNA: VulnCheck · vendor-advisory
- https://github.com/PrestaShop/PrestaShop/releases/tag/9.2.1CNA: VulnCheck · release-notes, patch
- https://github.com/PrestaShop/PrestaShop/releases/tag/8.2.9CNA: VulnCheck · release-notes, patch
- https://www.vulncheck.com/advisories/prestashop-webservice-api-authorization-bypass-via-id-shop-parameterCNA: VulnCheck · third-party-advisory
- https://github.com/PrestaShop/PrestaShop/releases/tag/8.2.9[email protected]
- https://github.com/PrestaShop/PrestaShop/releases/tag/9.2.1[email protected]
- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-3f36-4qv4-vfgh[email protected]
- https://www.vulncheck.com/advisories/prestashop-webservice-api-authorization-bypass-via-id-shop-parameter[email protected]
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