Security readout for executives and security teams
Plain-English summary
CVE-2026-25358 affects the WordPress Meloo theme before 2.8.2. It involves unsafe handling of serialized data, which can let a logged-in low-privilege attacker manipulate server-side PHP objects. The reported impact is high across confidentiality, integrity, and availability. No provided source confirms active exploitation.
Executive priority
Prioritize remediation for public WordPress sites using Meloo, especially those with open registration or many users. Treat as high urgency, but not emergency-level solely from exploitation evidence, because the provided sources do not confirm active attacks.
Technical view
The issue is CWE-502 deserialization of untrusted data in rascals Meloo. CVSS 3.1 is 8.8: network exploitable, low complexity, low privileges required, no user interaction, with high CIA impact. Affected versions are Meloo below 2.8.2. Public details in the provided sources do not describe exploit primitives, gadget chains, or exact vulnerable endpoints.
Likely exposure
Exposure is limited to WordPress installations using the Meloo theme below version 2.8.2. Because privileges are required, risk is higher on sites allowing subscriber/customer accounts, shared editorial access, or compromised WordPress users.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source confirms exploitation in the wild. The vulnerability is serious because PHP object injection can sometimes lead to data compromise, site takeover, or denial of service depending on reachable code paths.
Researcher notes
Public information is sparse. The CVE identifies unsafe deserialization in Meloo before 2.8.2 with PR:L and no UI. Do not assume unauthenticated exploitability from the CVSS vector. Further validation should focus on version exposure and vendor/Patchstack updates, not unverified exploit claims.
Mitigation direction
- Inventory WordPress sites for the Meloo theme and record installed versions.
- Update Meloo to version 2.8.2 or later where available.
- If updating is not possible, disable or replace the Meloo theme.
- Review vendor and Patchstack guidance for any additional remediation notes.
- Limit unnecessary WordPress user accounts and remove stale low-privilege access.
Validation and detection
- Confirm whether Meloo is installed on each WordPress site.
- Verify the installed Meloo version is 2.8.2 or later.
- Check Patchstack or vendor advisories for updated vulnerability status.
- Review WordPress user lists for unnecessary low-privilege accounts.
- Monitor logs for unusual authenticated activity against theme-related functionality.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-25358 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.