Unrestricted file upload in WP Libre Form plugin allows remote code execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
The WP Libre Form WordPress plugin 1.5.0.1 does not validate the type of files uploaded through its form submissions. An unauthenticated remote attacker can upload PHP files to a web-accessible location and run them, which leads to remote code execution. A public exploit is linked in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
The WP Libre Form WordPress plugin 1.5.0.1 does not validate the type of files uploaded through its form submissions, allowing unauthenticated attackers to upload PHP files to a web-accessible location and execute them, leading to remote code execution.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | WP Libre Form | 1.5.0.1 – 1.5.0.1 | — | No fix listed | CNA |
- WP Libre Form VendorUnknown Affected 1.5.0.1 – 1.5.0.1 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for WP Libre Form.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Timeline
- 2026-11-06 Threatist record created from CVE-2026-118423
- 2026-11-06 Alias added: GHSA-mhrf-qjwq-4j74
- 2026-11-06 Weakness changed · CISA ADP
- 2026-11-06 CISA SSVC decision points changed
References
Sources
- CVE-2026-118423 · CVE Program
- CVE-2026-118423 · NVD
- FIRST EPSS
- GHSA-mhrf-qjwq-4j74 · GitHub Advisory Database · CC BY 4.0
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