Security readout for executives and security teams
Plain-English summary
CVE-2026-25449 is a critical vulnerability in the WordPress Traveler theme before 3.2.8.1. It involves unsafe handling of serialized data, which can allow object injection. The CVSS score is 9.8, meaning the reported impact is severe and requires no login or user interaction.
Executive priority
Treat as urgent for any public WordPress site using Traveler. The vulnerability is critical, unauthenticated, and high-impact by CVSS. No active exploitation is confirmed in the provided sources, but remediation should be prioritized due to exposure potential.
Technical view
The issue is CWE-502, deserialization of untrusted data, in shinetheme Traveler. The CVSS vector is AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Public source data identifies affected versions as Traveler before 3.2.8.1. No public source in the bundle confirms active exploitation.
Likely exposure
Internet-facing WordPress sites running the Traveler theme below 3.2.8.1 are the likely exposure. Sites not using this theme are not indicated as affected by the provided sources.
Exploitation context
The CVSS vector indicates remote, unauthenticated exploitation with low complexity and no user interaction. The provided sources do not include exploit details, proof-of-concept status, or evidence of exploitation in the wild.
Researcher notes
Evidence is limited to the CVE record and Patchstack reference. The bundle identifies CWE-502 and versions before 3.2.8.1. It does not provide payloads, affected code paths, exploit maturity, or compensating controls beyond version-based remediation direction.
Mitigation direction
- Inventory WordPress sites for the Traveler theme and version.
- Update Traveler to version 3.2.8.1 or later where applicable.
- If immediate updating is not possible, check vendor guidance for supported mitigations.
- Prioritize externally reachable WordPress sites first.
Validation and detection
- Confirm whether the Traveler theme is installed on each WordPress site.
- Record the installed Traveler version and compare it with 3.2.8.1.
- Review vulnerability scanner results against the Patchstack entry.
- Monitor CVE and vendor references for updated remediation or exploitation information.
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-2026-25449 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/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.