CVE-2021-43852
JavaScript Prototype Pollution in oro/platform
OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution. This issue has been patched in version 4.2.8. Users unable to upgrade may configure a firewall to drop requests containing next strings: __proto__ , constructor[prototype], and constructor.prototype to mitigate this issue.
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
- Low
- Integrity
- Low
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
JavaScript Prototype Pollution in oro/platform
OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution. This issue has been patched in version 4.2.8. Users unable to upgrade may configure a firewall to drop requests containing next strings: __proto__ , constructor[prototype], and constructor.prototype to mitigate this issue.
- Record
CVE-2021-43852- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
EUVDEUVD-2022-0639
OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution. This issue has been patched in version 4.2.8. Users unable to upgrade may configure a firewall to drop requests containing next strings: __proto__ , constructor[prototype], and constructor.prototype to mitigate this issue.
- Record
EUVD-2022-0639- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jx5q-g37m-h5hj
Client-Side JavaScript Prototype Pollution in oro/platform
Summary
By sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution.
Workarounds
Configure WAF to drop requests containing next strings: __proto__ , constructor[prototype], constructor.prototype
- Record
GHSA-jx5q-g37m-h5hj- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-74, CWE-1321
- Updated
- 2026-11-02
NVD
OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution. This issue has been patched in version 4.2.8. Users unable to upgrade may configure a firewall to drop requests containing next strings: __proto__ , constructor[prototype], and constructor.prototype to mitigate this issue.
- Record
CVE-2021-43852- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-74, CWE-1321
- Updated
- 2026-11-02
OSV
OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution. This issue has been patched in version 4.2.8. Users unable to upgrade may configure a firewall to drop requests containing next strings: __proto__ , constructor[prototype], and constructor.prototype to mitigate this issue.
- Record
CVE-2021-43852- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-jx5q-g37m-h5hj
Client-Side JavaScript Prototype Pollution in oro/platform
Summary
By sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution.
Workarounds
Configure WAF to drop requests containing next strings: __proto__ , constructor[prototype], constructor.prototype
- Record
GHSA-jx5q-g37m-h5hj- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-1321, CWE-74
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
oro/platformPackagist |
4.1.0 up to 4.1.14 | 4.1.14 |
oro/platformPackagist |
4.2.0 up to 4.2.8 | 4.2.8 |
oro/platformPackagist |
4.1.0 up to 4.1.14, plus listed versions 4.1.14.1.1-rc4.1.1-rc24.1.104.1.11 Show 10 moreShow less4.1.124.1.134.1.24.1.34.1.44.1.54.1.64.1.74.1.84.1.9 |
4.1.14 |
oro/platformPackagist |
4.2.0 up to 4.2.8, plus listed versions 4.2.14.2.24.2.34.2.44.2.54.2.64.2.7 |
4.2.8 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-43852 is a high vulnerability (CVSS 8.8) in Oroinc Oroplatform, published January 4, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.13%, the 66th percentile. Fixed in oro/platform 4.1.14.