What’s Vulnerable › Vulnerabilities

CVE-2016-2049

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-02-01 · updated 2026-06-17
• Weakness: CWE-284

Description

examples/consumer/common.php in JanRain PHP OpenID library (aka php-openid) improperly checks the openid.realm parameter against the SERVER_NAME element in the SERVER superglobal array, which might allow remote attackers to hijack the authentication of arbitrary users via vectors involving a crafted HTTP Host header.

Affected products

• Janrain Php-Openid: all versions

References

• http://www.openwall.com/lists/oss-security/2016/01/24/2
• http://www.openwall.com/lists/oss-security/2016/01/24/5
• http://www.openwall.com/lists/oss-security/2016/01/24/2
• http://www.openwall.com/lists/oss-security/2016/01/24/5

Get alerted when CVE-2016-2049 or the next vulnerability affects your stack