Security readout for executives and security teams
Plain-English summary
CVE-2026-25419 affects the WordPress UpsellWP plugin by flycart. A logged-in user may access something they should not because authorization checks are missing. Public data rates this as medium severity, with limited confidentiality impact and no stated integrity or availability impact.
Executive priority
Address during the next routine security update cycle, sooner for ecommerce sites handling customer or order-related data. This is not currently evidenced as exploited, but WordPress plugin access-control flaws can create avoidable data exposure.
Technical view
The issue is a CWE-862 Missing Authorization flaw in the checkout-upsell-and-order-bumps WordPress plugin, reported for UpsellWP through version 2.2.5. CVSS 3.1 is 4.3: network exploitable, low complexity, low privileges required, no user interaction, confidentiality impact low only.
Likely exposure
Exposure is limited to WordPress sites running the UpsellWP checkout-upsell-and-order-bumps plugin at affected versions through 2.2.5. The CVSS vector indicates an attacker needs a low-privileged account, reducing broad unauthenticated risk.
Exploitation context
The source bundle does not show CISA KEV listing or public active exploitation. Available details do not describe the specific endpoint, data exposed, or proof-of-concept. Treat as a plugin access-control issue requiring authenticated access.
Researcher notes
Public details are sparse. The CVE and Patchstack entry identify missing authorization but do not provide endpoint-level detail in the supplied sources. Note the Patchstack URL references 2.2.3 while the CVE description states through 2.2.5; verify against the advisory before closure.
Mitigation direction
- Identify all WordPress sites using the UpsellWP plugin.
- Check installed plugin versions against affected versions through 2.2.5.
- Review vendor and Patchstack guidance for fixed versions or recommended mitigations.
- Restrict unnecessary WordPress user accounts until remediation is confirmed.
- Prioritize sites with customer, order, or marketing data exposure.
Validation and detection
- Inventory the checkout-upsell-and-order-bumps plugin across WordPress environments.
- Confirm whether installed versions are 2.2.5 or earlier.
- Review WordPress user roles and remove unneeded low-privilege accounts.
- Check application logs for unusual authenticated access to UpsellWP functionality.
- Verify remediation against vendor or Patchstack advisory updates.
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-862: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2026-25419 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
- Medium
- CVSS
- 4.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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:L/I:N/A:N2.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.