Security readout for executives and security teams
Plain-English summary
CVE-2026-22501 is a critical vulnerability in the WordPress Mounthood theme by axiomthemes, affecting versions up to 1.3.2. It involves unsafe handling of serialized data and could allow attackers to compromise confidentiality, integrity, and availability. No cited source confirms active exploitation.
Executive priority
Treat as urgent for any public WordPress site using Mounthood. The severity is critical and the weakness can enable serious compromise, but current sources do not confirm exploitation or identify a specific fixed version.
Technical view
The issue is CWE-502, deserialization of untrusted data, leading to PHP object injection in Mounthood <= 1.3.2. The CVSS 3.1 score is 9.8 with network attack vector, low complexity, no privileges, and no user interaction. Public sources do not provide exploit details, a patch version, or confirmed exploitation.
Likely exposure
Internet-facing WordPress sites using the Mounthood theme at version 1.3.2 or earlier 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 may be possible without user interaction. However, the provided sources do not include a proof of concept, weaponized exploit, or KEV listing, so active exploitation is not established.
Researcher notes
The record is concise and primarily references Patchstack. The affected range is stated as through 1.3.2, while the structured affected version data is sparse. Avoid assuming exploit chains or fixes beyond the cited advisories.
Mitigation direction
- Inventory WordPress sites for the Mounthood theme and record installed versions.
- If Mounthood is unused, remove it from affected WordPress installations.
- Check axiomthemes, Patchstack, or WordPress vendor channels for official update guidance.
- Prioritize upgrading or replacing versions 1.3.2 and earlier when vendor guidance is available.
- Increase monitoring for unexpected WordPress changes on sites using this theme.
Validation and detection
- Confirm whether each WordPress site has the Mounthood theme installed.
- Verify the installed Mounthood version is greater than 1.3.2, if an update exists.
- Review vendor and Patchstack advisories for remediation status and affected-version confirmation.
- Check WordPress administrative accounts, theme files, and recent changes for suspicious activity.
- Document exceptions where the theme remains installed pending vendor guidance.
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-2026-22501 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.