Security readout for executives and security teams
Plain-English summary
Joomla disclosed an inadequate content filtering issue that can lead to cross-site scripting in multiple components. An attacker may be able to get script content through filters where Joomla should have removed it. The sources do not provide CVSS scoring or evidence of active exploitation.
Executive priority
Treat this as a timely CMS hygiene issue for any Joomla 4 public site. It is not documented as actively exploited in the bundle, but XSS in a CMS can affect visitors, admins, and brand trust if exposed.
Technical view
CVE-2022-23800 affects Joomla! CMS 4.0.0 through 4.1.0 and joomla/filter 1.0.0-1.4.3 and 2.0.0. The flaw is improper content filtering in core filter code, producing XSS exposure across various components. No exploit details, CVSS vector, CWE, or patch version is included in the provided bundle.
Likely exposure
Exposure is likely limited to Joomla 4.x sites in the listed vulnerable ranges, especially where users, editors, or integrations can submit formatted content. Sites not running Joomla or outside the affected ranges are not indicated as affected by the provided sources.
Exploitation context
The bundle does not show CISA KEV listing or any cited evidence of active exploitation. The practical risk is stored or reflected XSS depending on the affected component and input path, but the sources do not identify specific attack paths.
Researcher notes
Evidence is sparse: affected ranges and XSS impact are clear, but severity scoring, component-level reachability, exploit preconditions, and fixed versions are not included in the supplied data. Validate exposure by version first, then review Joomla advisory details before deeper testing.
Mitigation direction
- Inventory Joomla CMS and joomla/filter versions across public and internal sites.
- Upgrade affected Joomla installations to versions outside the listed vulnerable ranges.
- Check the Joomla vendor advisory for the confirmed fixed release guidance.
- Restrict content submission privileges until affected systems are updated.
- Review web application firewall rules as temporary compensating control only.
Validation and detection
- Confirm Joomla CMS version is not 4.0.0 through 4.1.0.
- Confirm joomla/filter is not 1.0.0-1.4.3 or 2.0.0.
- Check dependency manifests and deployed runtime versions, not only repository files.
- Review recent content changes for unexpected script-like markup.
- Verify update completion in staging before production rollout.
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.
CVE-2022-23800 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://developer.joomla.org/security-centre/877-20220308-core-inadequate-content-filtering-within-the-filter-code.htmlCVE reference · x_refsource_MISC, vendor-advisory
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.