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    CVE-2026-79988

    The Twig sandbox mechanism in Craft CMS is configured to allow dangerous functionality from the Yii framework, leading to authenticated RCE similar to previously disclosed vulnerabilities.

    Published:Aug 27, 2026
    Last Modified:Aug 28, 2026
    EPS:Aug 27, 2026
    EPSS Score:0.00259
    CVSS Score:8.7

    Affected Products

    Vendor
    Craftcms
    Product
    Cms

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-693 Protection Mechanism Failure

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
    CAPEC-107 Cross Site Tracing
    CAPEC-127 Directory Indexing
    CAPEC-17 Using Malicious Files
    CAPEC-20 Encryption Brute Forcing
    CAPEC-22 Exploiting Trust in Client
    CAPEC-237 Escaping a Sandbox by Calling Code in Another Language
    CAPEC-36 Using Unpublished Interfaces or Functionality
    CAPEC-477 Signature Spoofing by Mixing Signed and Unsigned Content
    CAPEC-480 Escaping Virtualization
    CAPEC-51 Poison Web Service Registry
    CAPEC-57 Utilizing REST's Trust in the System Resource to Obtain Sensitive Data
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-65 Sniff Application Code
    CAPEC-668 Key Negotiation of Bluetooth Attack (KNOB)
    CAPEC-74 Manipulating State
    CAPEC-87 Forceful Browsing

    Related CVEs

    CVE-2026-79987 (CVSS 8.7) — A remote, authenticated, non-admin Craft CMS Control Panel user with only the accessCp permission can execute …
    CVE-2026-86732 (CVSS 8.7) — Craft CMS versions before 5.10.12 contain a remote code execution vulnerability in the element-index endpoint …
    CVE-2026-86730 (CVSS 8.7) — Craft CMS versions before 5.10.12 fail to properly cleanse string-typed field-layout elements, allowing authen…
    CVE-2026-79991 (CVSS 7.1) — Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout …
    CVE-2026-79990 (CVSS 8.7) — Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout …
    CVE-2026-79989 (CVSS 8.7) — The vulnerability allows any authenticated user to change their own password without providing the current pas…
    CVE-2026-78416 (CVSS 8.7) — Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remo…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High