Security readout for executives and security teams
Plain-English summary
RepairBuddy for WordPress lets low-privileged logged-in users upload or change order signatures they should not control. This can alter order metadata and may trigger unauthorized status changes. The business risk is order integrity, not data theft or system takeover based on the provided sources.
Executive priority
Handle as a normal-priority WordPress plugin remediation. It can affect repair order integrity and customer workflow trust, but provided evidence does not indicate takeover, data theft, or active exploitation.
Technical view
CVE-2026-0820 is an IDOR/missing authorization issue in wc_upload_and_save_signature_handler in RepairBuddy – Repair Shop CRM & Booking Plugin for WordPress through 4.1116. Authenticated Subscriber-level users and above can upload arbitrary signatures to any order. CVSS is 4.3, network exploitable, low complexity, low privileges, no user interaction, integrity impact only.
Likely exposure
Exposure is limited to WordPress sites running RepairBuddy versions up to and including 4.1116, especially sites allowing customer, subscriber, or other low-privileged accounts.
Exploitation context
The sources do not show CISA KEV listing or active exploitation. Exploitation requires a valid low-privileged account, but no user interaction. Impact appears limited to unauthorized order signature and metadata changes, potentially affecting order workflows.
Researcher notes
Classified as CWE-862 and described as IDOR from missing capability checks. The public bundle names the vulnerable handler and affected range, but does not provide a confirmed fixed version or exploitation-in-the-wild evidence.
Mitigation direction
- Check vendor or WordPress plugin guidance for a non-vulnerable RepairBuddy release.
- Update RepairBuddy beyond 4.1116 if a fixed version is available.
- Disable the plugin if it is not business-critical and no fix is available.
- Limit unnecessary Subscriber-level account creation on affected sites.
- Review recent order signature and status changes for unauthorized activity.
Validation and detection
- Inventory WordPress sites for the RepairBuddy plugin.
- Confirm installed RepairBuddy version is greater than 4.1116 or vendor-marked fixed.
- Review whether public registration or low-privileged user accounts are enabled.
- Audit order metadata, signatures, and status changes after suspicious logins.
- Monitor plugin changelog and Wordfence entry for remediation 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-2026-0820 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:N/I:L/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:N/I:L/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:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1b2ad299-03b1-4b9e-a241-d2ad2d85c3ac?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/computer-repair-shop/trunk/lib/includes/classes/class-wcrb_signature.php#L562CVE reference
- https://plugins.trac.wordpress.org/browser/computer-repair-shop/tags/4.1116/lib/includes/classes/class-wcrb_signature.php#L562CVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3436356%40computer-repair-shop&new=3436356%40computer-repair-shop&sfp_email=&sfph_mail=CVE reference
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.