Security readout for executives and security teams
Plain-English summary
CVE-2025-58218 affects the WordPress Small Package Quotes – USPS Edition plugin through version 1.3.9. A highly privileged attacker could potentially abuse unsafe PHP deserialization to affect confidentiality, integrity, and availability. The business risk is highest for WordPress sites using this shipping plugin where admin-level accounts may be compromised or shared.
Executive priority
Prioritize sites that process shipping quotes or expose WordPress administration broadly. Treat this as high urgency for affected installations, but not as confirmed mass exploitation based on the provided sources. The immediate decision is whether the plugin is present and whether a vendor-confirmed fix or temporary disablement is required.
Technical view
The issue is CWE-502 deserialization of untrusted data leading to PHP object injection in small-package-quotes-usps-edition <=1.3.9. CVSS 3.1 is 7.2: network reachable, low complexity, high privileges required, no user interaction, unchanged scope, high CIA impact. The sources do not describe a gadget chain, endpoint, or fixed version.
Likely exposure
Exposure appears limited to WordPress installations running Small Package Quotes – USPS Edition through 1.3.9. The CVSS privileges requirement suggests exploitation requires a high-privileged authenticated user. The provided data lacks CPEs and has inconsistent affected-version details, so confirm installed plugin name and version directly.
Exploitation context
The source bundle marks KEV as false and provides no cited evidence of active exploitation. Risk remains meaningful because PHP object injection can be severe when exploitable gadget chains exist, but the supplied sources do not confirm exploit availability, attack route, or exploitation in the wild.
Researcher notes
Evidence is sufficient to classify the issue as high severity CWE-502 in the named plugin, but incomplete for exploit mechanics and remediation. The affected data lists versions oddly while the description and title state <=1.3.9. Validate against live WordPress plugin metadata and vendor advisory before final risk acceptance.
Mitigation direction
- Inventory WordPress sites for small-package-quotes-usps-edition and record installed versions.
- Check vendor, WordPress plugin, and Patchstack guidance for a fixed release or official mitigation.
- Upgrade only to a vendor-confirmed fixed version when available.
- Disable or remove the plugin where it is not business-critical.
- Review and restrict high-privileged WordPress accounts.
Validation and detection
- Confirm whether the plugin is installed on each WordPress site.
- Verify installed plugin versions against the <=1.3.9 affected range.
- Check admin account logs for unusual high-privilege activity.
- Review vendor or Patchstack advisories for updated remediation status.
- Retest after any upgrade, disablement, or removal.
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-2025-58218 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
- 7.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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:H/UI:N/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.2HighVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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.