WordPress Happyforms plugin <= 1.26.13 - PHP Object Injection vulnerability
Priority MEDIUM 49CWE-502Published · Updated
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-502.
Summary
Unauthenticated PHP Object Injection in Happyforms <= 1.26.13 versions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00383 32nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| Happyforms | Happyforms | up to 1.26.13 | — | No fix listed | CNA |
- Happyforms VendorHappyforms Affected up to 1.26.13 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-49768
- 2026-10-03 Alias added: GHSA-c8fc-9hj8-3f9p
More Happyforms vulnerabilities
- TI-2023-00092 Happyforms < 1.22.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2024-09328 Happyforms < 1.26.3 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
- TI-2025-10981 HappyForms <= 1.26.12 - Authenticated (Admin+) Local File Inclusion CVSS 3.1MEDIUM 6.6
- TI-2023-26582 WordPress Happyforms Plugin <= 1.25.9 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1HIGH 7.1
- TI-2026-63940 WordPress Happyforms plugin <= 1.26.15 - Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2024-15562 WordPress Happyforms plugin <= 1.25.10 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
Sources
- CVE-2026-49768 · CVE Program
- CVE-2026-49768 · NVD
- FIRST EPSS
- GHSA-c8fc-9hj8-3f9p · GitHub Advisory Database · CC BY 4.0
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