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Nuts WordPress Theme EUVDEUVD-2026-112970

| CVE-2026-62006 CRITICAL
Deserialization of Untrusted Data (CWE-502)
2026-10-29 Patchstack GHSA-rph7-jgqm-mq62
9.8
CVSS 3.1 · Vendor: Patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify site using vulnerable Nuts theme
  2. Delivery
    Craft malicious serialized PHP object payload
  3. Exploit
    Submit to unauthenticated deserialization sink
  4. Execution
    Trigger POP gadget chain on unserialize
  5. Impact
    Achieve code execution or data compromise

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A08:2025 - Software or Data Integrity Failures
ASVS 5.0
V1 - Encoding and Sanitization Safe deserialization, type allowlists
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires the target to be running the ThemeREX 'Nuts' WordPress theme at version 1.12 or earlier, with the vulnerable deserialization code path reachable by an unauthenticated remote request (per AV:N/PR:N/UI:N). The practical impact additionally depends on the presence of a usable PHP POP/gadget chain in the theme or co-installed plugins/core, which the available sources do not describe or confirm. Limiting factors: the affected product is a specific commercial theme rather than ubiquitous software, so exposure is bounded by how many sites run this theme; the exact input/feature that triggers unserialization is not stated in the available data.

Impact

Multiple severity signals align toward high priority but real-world risk is tempered by product footprint and thin exploitation data. The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes network-reachable, low-complexity, unauthenticated exploitation with high confidentiality, integrity and availability impact (9.8), and the vuln.today decision label is 'act_now', which argues for prompt remediation. CWE-502 (deserialization) combined with the 'PHP Object Injection' description means exploitation outcome typically hinges on available POP/gadget chains in the theme or co-installed plugins; the input does not describe the trigger or confirm a working chain, so the H/H/H impact is a plausible worst case rather than a demonstrated one. No EPSS score is supplied, so exploitation probability cannot be quantified; the vulnerability is NOT in CISA KEV; and the single reference is the Patchstack advisory, not a published proof-of-concept, so there is no confirmed public exploit. Net: a genuinely high-severity, unauthenticated flaw worth patching quickly per the act_now label, but the absence of EPSS, KEV, and any PoC - together with a niche WordPress theme footprint - suggests this is a serious-but-not-yet-widely-weaponized issue rather than a mass-exploitation emergency. Verify fixed version with ThemeREX/Patchstack, as the input lists only affected versions (<= 1.12) and no fix.

Exploit ScenarioDerived

A remote attacker sends a crafted request to a WordPress site running the ThemeREX 'Nuts' theme (version 1.12 or earlier) containing a serialized PHP object in an input the theme deserializes, without needing any authentication. If a usable gadget (POP) chain exists in the theme or other installed code, deserialization can escalate to actions such as file operations, data disclosure, or remote code execution. No public exploit code is identified in the provided data, and the exact trigger is not described in the available sources.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.4% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 29, 2026

Unauthenticated PHP object injection in the ThemeREX 'Nuts' WordPress theme (versions up to and including 1.12) lets remote attackers pass crafted serialized data into a PHP unserialize() path without any credentials, rated CVSS 9.8 (AV:N/AC:L/PR:N/UI:N/C:H/I:H/A:H) by the reporter. Actual exploitation success is conditional: the practical impact depends on a usable POP/gadget chain being present in the theme or in co-installed plugins or WordPress core, and the available sources do not confirm such a chain or identify the exact request/feature that reaches the deserialization sink. No public exploit code is confirmed and the CVE is not in CISA KEV, although the vuln.today decision label is act_now, so this should be treated as a high-priority patch item for sites running the theme rather than as an actively exploited emergency.

RemediationAI

No vendor-released patch version is identified in the available data, so the first step is to check the ThemeREX customer area and the Patchstack advisory (https://patchstack.com/database/wordpress/theme/nuts/vulnerability/wordpress-nuts-theme-1-12-php-object-injection-vulnerability?_s_id=cve) for a fixed theme build, and upgrade as soon as one is published. Until a fixed build is confirmed, the highest-value action is to remove or deactivate the Nuts theme on any site that does not require it - the trade-off is loss of the site's themed presentation, so a staging copy should be retained - because deactivating the theme removes the vulnerable code path entirely; where the theme must stay live, reducing the gadget surface by removing unused plugins and bundled libraries with known unserialize() magic-method chains limits, but does not eliminate, the chance that object injection converts into code execution, and this is a probabilistic control rather than a fix. No vendor-documented workaround or WAF signature for this specific issue is provided in the supplied references, so any virtual patching rule must be written against the site's own traffic once the vulnerable endpoint is identified.

Affected VersionsENISA

Nuts n/a ≤1.12

Affected Packages

euvd nuts no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a CWE-502 Deserialization of Untrusted Data case in a PHP-based WordPress theme. WordPress themes routinely accept request parameters and, in vulnerable code paths, feed attacker-influenced values into PHP's unserialize(), which can instantiate arbitrary classes and invoke magic methods (__wakeup, __destruct, __toString). Whether that object injection escalates to file writes, code execution or data disclosure depends entirely on the classes autoloadable in the target installation - i.e., on a POP/gadget chain supplied by the theme itself, a bundled library, another plugin or core. The CPE cpe:2.3:a:themerex:nuts:*:*:*:*:*:*:*:* identifies the affected component as the ThemeREX 'Nuts' theme across all versions, with the advisory scoping the flaw to 1.12 and earlier; because the theme is commercial and distributed outside the wordpress.org repository, the vulnerable unserialize() call site and the triggering request are not described in the available sources, so the precise mechanism by which input reaches the sink is unverified.

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Severity by source

Vendor (Patchstack) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 9.8 CRITICAL

Described as unauthenticated and network-reachable (AV:N/PR:N/UI:N/AC:L); PHP object injection can yield full code execution via a gadget chain, so C/I/A:H as the realistic worst case.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (Patchstack).

CVSS VectorVendor: Patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Unauthenticated PHP Object Injection in Nuts <= 1.12 versions.

Executive ViewAI

Why It Matters

Sites running the ThemeREX 'Nuts' WordPress theme (versions up to and including 1.12) carry an unauthenticated critical-severity flaw that allows remote attackers to inject serialized data into a PHP deserialization path. While the vulnerability is rated 9.8 and warrants prompt remediation, no public exploit code is confirmed and it is not known to be actively exploited, so leadership should prioritize scheduled patching rather than emergency response. Any organization hosting WordPress sites with this theme should treat this as a high-priority maintenance item given the unauthenticated attack surface.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis; interim mitigations include deactivating or removing the vulnerable theme, upgrading to a maintained alternative theme, deploying WAF rules to block crafted serialized payloads, minimizing installed plugins to reduce gadget-chain availability, and restricting administrative exposure where possible.

Threat Intelligence Overview

EPSS Score
0.4%
Top 64% exploitable
Prevalence
Low
niche commercial WordPress theme, limited per-theme install base
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.4%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
High
Technical Impact
Total

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation.

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