CVE-2023-29689
PyroCMS remote code execution vulnerability
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
- Record
CVE-2023-29689- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
CVE List No score
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
- Record
CVE-2023-29689- Updated
- 2026-11-02
EUVDEUVD-2023-2371 No score
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
- Record
EUVD-2023-2371- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w7vm-4v3j-vgpw
PyroCMS remote code execution vulnerability
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
- Record
GHSA-w7vm-4v3j-vgpw- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-w7vm-4v3j-vgpw
PyroCMS remote code execution vulnerability
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
- Record
GHSA-w7vm-4v3j-vgpw- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSV No score
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw. This vulnerability allows a malicious attacker to send customized commands to the server and execute arbitrary code on the affected system.
- Record
CVE-2023-29689- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pyrocms/pyrocmsPackagist |
through 3.9 | None known |
pyrocms/pyrocmsPackagist |
through 3.9, plus listed versions 3.0.0-alpha13.0.0-alpha23.4.11v2.3.0-alpha1v2.3.0-beta1 Show 45 moreShow lessv3.0.0v3.0.0-beta1v3.0.0-beta2v3.0.0-beta3v3.0.0-rc1v3.0.0-rc2v3.0.1v3.0.2v3.1.0v3.1.1v3.1.2v3.1.3v3.1.4v3.1.5v3.2.0v3.2.1v3.2.2v3.2.3v3.3.0v3.3.1v3.3.2v3.3.3v3.3.4v3.3.5v3.3.6v3.3.7v3.3.8v3.3.9v3.4.0v3.4.1v3.4.10v3.4.12v3.4.13v3.4.14v3.4.15v3.4.2v3.4.3v3.4.4v3.4.5v3.4.6v3.4.7v3.4.8v3.4.9v3.5.0v3.5.1 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Pyro CMS 3.9 - Server-Side Template Injection (SSTI) (Authenticated) | 2023-08-08 |
| PoC in GitHub | YSaxon/pyrocms-ssti-fix | 2026-01-09 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-29689 is a critical vulnerability (CVSS 9.8) in Pyrocms, published August 4, 2023. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 53.5%, the 98th percentile. No source names a fixed version.
References
cupc4k3.lol/ssti-leads-to-rce-on-pyrocms-7515be27c811
packetstormsecurity.com/files/174088/Pyro-CMS-3.9-Server-Side-Template-Injection.html
nvd.nist.gov/vuln/detail/CVE-2023-29689
github.com/advisories/GHSA-w7vm-4v3j-vgpw
Left out here: 14 versions. The JSON record has them.