Project Pier <= 0.8.8 Arbitrary File Upload RCE
Published Aug 8, 2025
9.3
CRITICALCVSS 4.0
EPSS 1.78%
Description
Project Pier 0.8.8 and earlier contains an unauthenticated arbitrary file upload vulnerability in tools/upload_file.php. The upload handler fails to validate the file type or enforce authentication, allowing remote attackers to upload malicious PHP files directly into a web-accessible directory. The uploaded file is stored with a predictable suffix and can be executed by requesting its URL, resulting in remote code execution.
Affected products
-
- Version 0StatusaffectedConstraints<=0.8.8
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| ProjectPier | ProjectPier | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Aug 8, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (6 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.78% (0.01784) | 77.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.51% (0.01511) | 71.05th | v5 (v2026.06.15) |
| Jun 4, 2026 | 81.64% (0.81635) | 99.21th | v4 (v2025.03.14) |
| Dec 8, 2025 | 72.52% (0.72525) | 98.70th | v4 (v2025.03.14) |
| Oct 8, 2025 | 69.61% (0.69609) | 98.59th | v4 (v2025.03.14) |
| Aug 9, 2025 | 0.65% (0.00649) | 69.84th | v4 (v2025.03.14) |
References (6)
- https://packetstorm.news/files/id/117070 exploit
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/projectpier_upload_exec.rb exploit
- https://web.archive.org/web/20120111090432/http://www.projectpier.org/ product
- https://www.exploit-db.com/exploits/21929 exploit
- https://www.opensourcecms.com/projectpier/ product
- https://www.vulncheck.com/advisories/project-pier-arbitrary-file-upload-rce third-party-advisory
Change history (0)
No recorded changes yet.