Is CVE-2016-2222 in the CISA KEV catalog?

No. CVE-2016-2222 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-2222?

CVE-2016-2222 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2016-2222?

CVE-2016-2222 has an EPSS score of 9.28% (95th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-2222?

Upgrade wordpress on debian 11 to 4.4.2+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2016-2222

HIGHEPSS 95th pctl

8.6

CVSS v3

NVD

Description

The wp_http_validate_url function in wp-includes/http.php in WordPress before 4.4.2 allows remote attackers to conduct server-side request forgery (SSRF) attacks via a zero value in the first octet of an IPv4 address in the u parameter to wp-admin/press-this.php.

How to fix

Remediation Available

wordpressDebian

Fixed in:4.4.2+dfsg-1CVE-2016-2222

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Exploit Intelligence

9.28%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Patch2

Exploit1

hackerone.com

Other references6

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.