CVE-2023-5966
Unrestricted Upload of File with Dangerous Type in EspoCRM
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Unrestricted Upload of File with Dangerous Type in EspoCRM
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
- Record
CVE-2023-5966- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-434
- Updated
- 2026-11-02
EUVDEUVD-2023-58237
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
- Record
EUVD-2023-58237- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-7wx4-fjq2-2hjg
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server...
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
- Record
GHSA-7wx4-fjq2-2hjg- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
NVD
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
- Record
CVE-2023-5966- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-434
- Updated
- 2026-11-02
OSV
Unrestricted Upload of File with Dangerous Type in EspoCRM
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
- Record
CVE-2023-5966- CVSS 3.1
- 4.7 Medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-434
- Updated
- 2026-11-02
OSVBIT-espocrm-2023-5966 No score
An authenticated privileged attacker could upload a specially crafted zip to the EspoCRM server in version 7.2.5, via the extension deployment form, which could lead to arbitrary PHP code execution.
- Record
BIT-espocrm-2023-5966- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
espocrmBitnami |
before 7.5.2 | 7.5.2 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | ll104567/cve-2023-5966 | 2024-03-08 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-5966 is a medium vulnerability (CVSS 4.7) in Espocrm, published November 30, 2023. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.04%, the 64th percentile. Fixed in espocrm 7.5.2.