Security readout for executives and security teams
Plain-English summary
This issue affects WordPress sites running the Noo Timetable plugin version 2.1.3 or earlier. A contributor-level user could store malicious script content that later runs in another user’s browser. The main business risk is account or session abuse inside WordPress, especially if administrators review affected content.
Executive priority
Treat this as a moderate-priority web application risk. It is not currently evidenced as exploited in the supplied sources, but affected public WordPress sites with multiple content users should be remediated promptly.
Technical view
CVE-2022-45821 is an authenticated stored cross-site scripting issue in NooTheme Noo Timetable <=2.1.3. The CVSS 3.1 score is 6.5 with low attack complexity, low privileges required, user interaction required, and changed scope. The weakness is CWE-79. The source bundle does not name a fixed version.
Likely exposure
Exposure is likely limited to WordPress installations using Noo Timetable <=2.1.3 where contributor-level or higher accounts exist. Risk increases if untrusted users can create timetable content or if lower-privileged accounts are compromised.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV. Exploitation requires authenticated contributor-or-higher access and a victim interaction path, such as another user viewing stored content.
Researcher notes
The available evidence identifies authenticated stored XSS and contributor-plus privileges but does not provide a patched version, vulnerable parameter, or exploit detail. Validate exposure through installed plugin version and role model rather than assuming broad unauthenticated compromise.
Mitigation direction
- Inventory WordPress sites for the Noo Timetable plugin and version.
- Check vendor or Patchstack guidance for a confirmed fixed release.
- Update only to a version confirmed by trusted sources as fixed.
- Restrict contributor-or-higher access to trusted users only.
- Disable or remove the plugin where it is not business-critical.
Validation and detection
- Confirm whether Noo Timetable <=2.1.3 is installed on any WordPress site.
- Review WordPress roles for contributor, author, editor, and administrator accounts.
- Check whether untrusted users can create or edit timetable content.
- Review recent timetable content changes by lower-privileged users.
- Look for unexpected script-like content in plugin-managed entries.
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-79: 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-2022-45821 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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:R/S:C/C:L/I:L/A:L2.33.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.