Cyber Resilience

CVE-2026-27095

CriticalRCE

Published: 25 March 2026

Published
25 March 2026
Modified
24 April 2026
KEV Added
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Patch
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CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0037 29.2th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-27095 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 29.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).

Deeper analysis

CVE-2026-27095 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the WordPress plugin Bus Ticket Booking with Seat Reservation by magepeopleteam, with the component identifier bus-ticket-booking-with-seat-reservation. The issue enables Object Injection and affects all versions from n/a through 5.6.0. Published on 2026-03-25, it carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), marking it as critical.

Unauthenticated remote attackers can exploit this vulnerability over the network with low complexity and no user interaction required. Exploitation involves injecting malicious serialized objects, potentially leading to high-impact compromise of confidentiality, integrity, and availability on affected WordPress sites running the vulnerable plugin version.

The Patchstack advisory provides further details on this PHP Object Injection vulnerability, accessible at https://patchstack.com/database/Wordpress/Plugin/bus-ticket-booking-with-seat-reservation/vulnerability/wordpress-bus-ticket-booking-with-seat-reservation-plugin-5-6-2-php-object-injection-vulnerability?_s_id=cve.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability details

Deserialization of Untrusted Data vulnerability in magepeopleteam Bus Ticket Booking with Seat Reservation bus-ticket-booking-with-seat-reservation allows Object Injection.This issue affects Bus Ticket Booking with Seat Reservation: from n/a through <= 5.6.0.

CWE(s)
CWE-502

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Why these techniques?

Remote unauthenticated deserialization/object injection flaw in public-facing WordPress plugin directly enables T1190 (Exploit Public-Facing Application) with no other techniques explicitly supported by the given description.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-62368Shared CWE-502
CVE-2025-68903Shared CWE-502
CVE-2025-67911Shared CWE-502
CVE-2025-54014Shared CWE-502
CVE-2026-22505Shared CWE-502
CVE-2025-53078Shared CWE-502
CVE-2026-43633Shared CWE-502
CVE-2025-60039Shared CWE-502
CVE-2026-25429Shared CWE-502
CVE-2025-7697Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

Timely patching of the vulnerable Bus Ticket Booking with Seat Reservation plugin up to version 5.6.0 directly remediates the deserialization of untrusted data flaw.

SI-10 Information Input Validation good match
prevent

Validating untrusted serialized data inputs before deserialization blocks malicious object injection in the WordPress plugin.

RA-5 Vulnerability Monitoring and Scanning good match
detect

Vulnerability scanning detects the known PHP object injection vulnerability (CVE-2026-27095) in the affected plugin versions.

References