Security readout for executives and security teams
Plain-English summary
A WordPress plugin, Kaswara Modern VC Addons, allowed unauthenticated visitors to trigger privileged AJAX actions. Reported impacts include importing data, uploading arbitrary files, deleting files, and other unauthorized changes. For an affected site, this creates meaningful integrity and availability risk without requiring a logged-in account.
Executive priority
Treat this as a high-priority WordPress plugin exposure. The risk is strongest for public sites using the plugin because exploitation does not require credentials. Focus on rapid inventory, plugin removal or vendor-supported remediation, and evidence review for file changes.
Technical view
CVE-2021-4448 is a CWE-862 missing authorization issue in Kaswara Modern VC Addons for WordPress, described as affecting versions up to and including 3.0.1. The CVSS 3.1 score is 7.3, with network access, low complexity, no privileges, and no user interaction required.
Likely exposure
Exposure is limited to WordPress sites with the Kaswara Modern VC Addons plugin installed, especially versions up to 3.0.1. The source bundle does not provide install counts, exact vulnerable AJAX action names, or confirmed fixed versions.
Exploitation context
The sources describe unauthenticated attack potential, but do not cite active exploitation. The CVE is not listed as KEV in the provided bundle, so exploitation should be treated as plausible risk rather than confirmed in-the-wild activity.
Researcher notes
The provided affected metadata is sparse and appears less specific than the narrative description. The strongest source-grounded affected range is from the description: versions up to and including 3.0.1. No patch version, exploit sample, or KEV evidence is provided.
Mitigation direction
- Inventory WordPress sites for Kaswara Modern VC Addons installations and plugin version.
- Disable or remove affected plugin versions if no supported fixed release is available.
- Check vendor, marketplace, and Wordfence guidance for a confirmed patched version.
- Review site file integrity and uploaded files for unauthorized changes.
- Prioritize backups before removing suspicious files or restoring content.
Validation and detection
- Confirm whether Kaswara Modern VC Addons is installed on each WordPress site.
- Record the installed version and compare it with the reported affected range.
- Review web logs for unusual unauthenticated AJAX activity involving the plugin.
- Inspect WordPress uploads and plugin directories for unexpected files.
- Check recent file deletions or content imports against administrative change records.
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 lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-4448 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
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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:N/UI:N/S:U/C:L/I:L/A:L3.93.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.
Missing Authorization
Missing Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.