Security readout for executives and security teams
Plain-English summary
CVE-2026-1983 affects the SEATT: Simple Event Attendance WordPress plugin through version 1.5.0. A malicious site or link could cause a logged-in administrator to delete events without intending to. This is not a server takeover issue, but it can disrupt event listings and operations if administrators are targeted.
Executive priority
Treat as a targeted operational integrity risk, not an emergency breach scenario. Prioritize sites where events drive customer communication, registrations, or revenue, and confirm whether a safe update or compensating control is available.
Technical view
The vulnerability is a CSRF issue in event deletion caused by missing nonce validation. It allows an unauthenticated attacker to trigger arbitrary event deletion only if they can induce an administrator to perform an action such as clicking a crafted link. CVSS is 4.3, with network attack vector, low complexity, no privileges, and required user interaction.
Likely exposure
Exposure is limited to WordPress sites running SEATT: Simple Event Attendance versions up to and including 1.5.0, especially where administrators are active and event records matter operationally.
Exploitation context
The source bundle does not indicate active exploitation, and CISA KEV status is false. Exploitation depends on social engineering a logged-in administrator, so phishing and admin browsing habits are central to risk.
Researcher notes
The description states all versions up to 1.5.0 are affected. The affected metadata in the bundle appears inconsistent, listing version "0" with defaultStatus "unaffected." Use the narrative description, Wordfence entry, and referenced WordPress Trac code locations for validation. No exploit-in-the-wild evidence is provided.
Mitigation direction
- Check the plugin vendor or WordPress plugin page for updated guidance or a fixed release.
- If no fix is available, disable the plugin where event functionality is not required.
- Limit WordPress administrator access to trusted users only.
- Warn administrators not to click unexpected links while logged into WordPress.
- Maintain backups so deleted event data can be restored.
Validation and detection
- Inventory WordPress sites for the SEATT: Simple Event Attendance plugin.
- Confirm installed plugin versions and flag versions up to 1.5.0.
- Review whether event deletion actions enforce nonce validation in the installed code.
- Check logs and admin activity for unexpected event deletions.
- Verify whether vendor guidance or an updated plugin version is available.
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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2026-1983 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:N/UI:R/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:N/UI:R/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:N/UI:R/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/cdfc1110-7bbd-45f0-97ef-271c45d222c1?source=cveCVE reference
- https://plugins.trac.wordpress.org/browser/simple-event-attendance/trunk/seatt_events_admin.php#L23CVE reference
- https://plugins.trac.wordpress.org/browser/simple-event-attendance/tags/1.5.0/seatt_events_admin.php#L23CVE 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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.