A HIGH-severity vulnerability identified as CVE-2026-27475 has been published on February 19, 2026 with a CVSS base score of 8.1. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.
Vulnerability Details
CVE ID: CVE-2026-27475
Severity: HIGH
CVSS Score: 8.1
Published: February 19, 2026
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Confidentiality Impact | High |
| Integrity Impact | High |
| Availability Impact | High |
Technical Description
SPIP before 4.4.9 allows Insecure Deserialization in the public area through the table_valeur filter and the DATA iterator, which accept serialized data. An attacker who can place malicious serialized content (a pre-condition requiring prior access or another vulnerability) can trigger arbitrary object instantiation and potentially achieve code execution. The use of serialized data in these components has been deprecated and will be removed in SPIP 5. This vulnerability is not mitigated by the SPIP security screen.
Potential Impact
If exploited, this high-severity vulnerability could allow an attacker to compromise sensitive data confidentiality, tamper with system integrity, cause a denial of service. Organizations running affected software should treat this as a priority remediation item.
Recommended Action
No official patch is available yet. Until one is released:
- Monitor the official NVD page and vendor channels for patch announcements.
- Restrict access to the affected system or service where possible.
- Apply network-level mitigations such as firewall rules or WAF policies.
- Enable logging and alerting for anomalous activity related to this vulnerability.
- Review your incident response plan in case of active exploitation.
References
Related Security Advisories
- [HIGH] CVE-2026-27464 — CVSS 7.7 (February 21, 2026) — HIGH / CVSS 7.7
- [HIGH] CVE-2026-27466 — CVSS 7.2 (February 21, 2026) — HIGH / CVSS 7.2
- [HIGH] CVE-2026-26050 — CVSS 7.8 (February 20, 2026) — HIGH / CVSS 7.8
![[CRITICAL] CVE-2026-28773 — CVSS 9.3 (March 4, 2026)](https://atlas-cybersecurity.com/wp-content/plugins/elementor/assets/images/placeholder.png)
