EUVD-2026-53878
GHSA-ccgm-8j36-5mhx
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Unauthenticated network vector (PR:N/AV:N), but exploitation to high impact depends on an available POP gadget chain, warranting AC:H rather than AC:L.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated PHP Object Injection in Agricola <= 1.21.0 versions.
AnalysisAI
PHP Object Injection in the Agricola WordPress theme (versions ≤ 1.21.0 by AxiomThemes) lets unauthenticated remote attackers inject crafted serialized PHP objects that are deserialized by the application, and with a suitable POP gadget chain this can escalate to arbitrary file operations, SQL manipulation, or remote code execution. Rated CVSS 9.8 and disclosed by Patchstack (EUVD-2026-53878), it requires no authentication or user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the vulnerable Agricola theme (≤ 1.21.0) be installed and active, and that attacker-controlled input reach the theme's unserialize() sink over the network - no authentication (PR:N) and no user interaction (UI:N) are needed per the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, 9.8) describes a fully remote, unauthenticated, low-complexity flaw with high impact across confidentiality, integrity, and availability - the maximum-urgency profile on paper. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An unauthenticated attacker sends a crafted HTTP request to a Agricola-powered WordPress site with a malicious serialized PHP object placed in a parameter that the theme passes to unserialize(). If a POP gadget chain exists in the theme, WordPress core, or an active plugin, the object triggers a chained magic-method sequence leading to file write, data tampering, or code execution. … |
| Remediation | Upgrade the Agricola theme to a release newer than 1.21.0 once AxiomThemes publishes a patched version; no exact fix version is identified in the available data, so consult the vendor and the Patchstack advisory (https://patchstack.com/database/wordpress/theme/agricola/vulnerability/wordpress-agricola-theme-1-21-0-php-object-injection-vulnerability) for the fixed release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all WordPress installations running Agricola theme version 1.21.0 or earlier and document business criticality of each site. …
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External POC / Exploit Code
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