CVE-2023-29689
CriticalPublic exploitPyroCMS remote code execution vulnerability
Published Aug 4, 2023 · Updated Aug 12, 2026 · Also known as GHSA-w7vm-4v3j-vgpw
Key Facts
Patch immediately- CVE-2023-29689 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Pyrocms, pyrocms/pyrocms (composer).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 53% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
53%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-29689 brief as a PDF
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Description
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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| PyrocmsPyrocms | 3.9 | n/a |
| pyrocms/pyrocmscomposer | See advisory | n/a |
Timeline
Publicly disclosed
Aug 4, 2023
Last updated
Aug 12, 2026
References
- advisoryGHSA advisory
- advisoryhttps://github.com/CVEProject/cvelistV5/tree/main/cves/2023/29xxx/CVE-2023-29689.json
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2023-29689
- exploithttps://cupc4k3.lol/ssti-leads-to-rce-on-pyrocms-7515be27c811
- exploitExploitDB-51669
FAQ
Common Questions.
PyroCMS 3.9 contains a remote code execution (RCE) vulnerability that can be exploited through a server-side template injection (SSTI) flaw.
Affected: Pyrocms versions 3.9; pyrocms/pyrocms (composer). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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