CVE-2023-0816

MEDIUMNVD 6.56.5—Elevated

6.5

The Formidable Forms WordPress plugin before 6.1 uses several potentially untrusted headers to determine the IP address of the client, leading to IP Address spoofing and bypass of anti-spam protections.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 36.9%
KEV: Not listed

Published

March 27, 2023

Last Modified

February 19, 2025

References (2)

contact@wpscanhttps://wpscan.com/vulnerability/a281f63f-e295-4666-8a08-01b23cd5a744
af854a3a-2127-422b-91ae-364da2661108https://wpscan.com/vulnerability/a281f63f-e295-4666-8a08-01b23cd5a744

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:12 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 04:29 UTCEG score recompute

Frequently asked(5)

What is CVE-2023-0816?

CVE-2023-0816 is a medium vulnerability published on March 27, 2023. The Formidable Forms WordPress plugin before 6.1 uses several potentially untrusted headers to determine the IP address of the client, leading to IP Address spoofing and bypass of anti-spam protections.

When was CVE-2023-0816 disclosed?

CVE-2023-0816 was first published in the National Vulnerability Database on March 27, 2023, with the most recent update on February 19, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2023-0816 actively exploited?

CVE-2023-0816 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 36.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-0816?

CVE-2023-0816 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2023-0816?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-0816, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-0816

Explore →

Is Your Infrastructure Affected by CVE-2023-0816?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2023-0816

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-0816?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)