CVE-2024-34716
PrestaShop vulnerable to XSS via customer contact form in FO, through file upload
PrestaShop is an open source e-commerce web application. A cross-site scripting (XSS) vulnerability that only affects PrestaShops with customer-thread feature flag enabled is present starting from PrestaShop 8.1.0 and prior to PrestaShop 8.1.6. When the customer thread feature flag is enabled through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office. The script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right. This vulnerability is patched in 8.1.6. A workaround is to disable the customer-thread feature-flag.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
PrestaShop vulnerable to XSS via customer contact form in FO, through file upload
PrestaShop is an open source e-commerce web application. A cross-site scripting (XSS) vulnerability that only affects PrestaShops with customer-thread feature flag enabled is present starting from PrestaShop 8.1.0 and prior to PrestaShop 8.1.6. When the customer thread feature flag is enabled through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office. The script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right. This vulnerability is patched in 8.1.6. A workaround is to disable the customer-thread feature-flag.
- Record
CVE-2024-34716- CVSS 3.1
- 9.7 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2024-1402
PrestaShop is an open source e-commerce web application. A cross-site scripting (XSS) vulnerability that only affects PrestaShops with customer-thread feature flag enabled is present starting from PrestaShop 8.1.0 and prior to PrestaShop 8.1.6. When the customer thread feature flag is enabled through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office. The script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right. This vulnerability is patched in 8.1.6. A workaround is to disable the customer-thread feature-flag.
- Record
EUVD-2024-1402- CVSS 3.1
- 9.7 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-45vm-3j38-7p78
PrestaShop cross-site scripting via customer contact form in FO, through file upload
Impact
Only PrestaShops with customer-thread feature flag enabled are impacted, starting from PrestaShop 8.1.0.
The impact is substantial, when the customer thread feature flag is enabled, through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office.
Consequence: the script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right.
Patches
This vulnerability is patched in 8.1.6.
Workarounds
As long as you have not upgraded to 8.1.6, a simple workaround is to disable the customer-thread feature-flag.
Thank you to Ayoub AIT ELMOKHTAR, who discovered this vulnerability and share it with the PrestaShop team.
- Record
GHSA-45vm-3j38-7p78- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
PrestaShop is an open source e-commerce web application. A cross-site scripting (XSS) vulnerability that only affects PrestaShops with customer-thread feature flag enabled is present starting from PrestaShop 8.1.0 and prior to PrestaShop 8.1.6. When the customer thread feature flag is enabled through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office. The script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right. This vulnerability is patched in 8.1.6. A workaround is to disable the customer-thread feature-flag.
- Record
CVE-2024-34716- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
PrestaShop vulnerable to XSS via customer contact form in FO, through file upload
PrestaShop is an open source e-commerce web application. A cross-site scripting (XSS) vulnerability that only affects PrestaShops with customer-thread feature flag enabled is present starting from PrestaShop 8.1.0 and prior to PrestaShop 8.1.6. When the customer thread feature flag is enabled through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office. The script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right. This vulnerability is patched in 8.1.6. A workaround is to disable the customer-thread feature-flag.
- Record
CVE-2024-34716- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-45vm-3j38-7p78
PrestaShop cross-site scripting via customer contact form in FO, through file upload
Impact
Only PrestaShops with customer-thread feature flag enabled are impacted, starting from PrestaShop 8.1.0.
The impact is substantial, when the customer thread feature flag is enabled, through the front-office contact form, a hacker can upload a malicious file containing an XSS that will be executed when an admin opens the attached file in back office.
Consequence: the script injected can access the session and the security token, which allows it to perform any authenticated action in the scope of the administrator's right.
Patches
This vulnerability is patched in 8.1.6.
Workarounds
As long as you have not upgraded to 8.1.6, a simple workaround is to disable the customer-thread feature-flag.
Thank you to Ayoub AIT ELMOKHTAR, who discovered this vulnerability and share it with the PrestaShop team.
- Record
GHSA-45vm-3j38-7p78- CVSS 3.1
- 9.6 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
prestashop/prestashopPackagist |
8.1.0 up to 8.1.6 | 8.1.6 |
prestashop/prestashopPackagist |
8.1.0 up to 8.1.6, plus listed versions 8.1.18.1.28.1.38.1.48.1.5 |
8.1.6 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | 0xDTC/Prestashop-CVE-2024-34716 | 2024-10-28 |
| PoC in GitHub | Pallangyo98/Trickster-HTB | 2025-02-19 |
| PoC in GitHub | aelmokhtar/CVE-2024-34716 | 2024-05-14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-34716 is a critical vulnerability (CVSS 9.7) in Prestashop, published May 14, 2024. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 56.4%, the 99th percentile. Fixed in prestashop/prestashop 8.1.6.
References
github.com/PrestaShop/PrestaShop/security/advisories/GHSA-45vm-3j38-7p78
nvd.nist.gov/vuln/detail/CVE-2024-34716