CVE-2021-21311
CISA KEVPublished September 29, 2025 · Updated April 3, 2026
high
Official Description+
Adminer contains a server-side request forgery vulnerability that, when exploited, allows a remote attacker to obtain potentially sensitive information.
Affected Products
| Vendor | Product |
|---|---|
| Adminer | Adminer |
Patch Status
Patch by 2025-10-20
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2021-21311.