What’s Vulnerable › Vulnerabilities

CVE-2019-11027

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-06-10 · updated 2026-06-17

Description

Ruby OpenID (aka ruby-openid) through 2.8.0 has a remotely exploitable flaw. This library is used by Rails web applications to integrate with OpenID Providers. Severity can range from medium to critical, depending on how a web application developer chose to employ the ruby-openid library. Developers who based their OpenID integration heavily on the "example app" provided by the project are at highest risk.

Affected products

• OpenID Ruby-Openid: through 2.8.0

References

• https://github.com/openid/ruby-openid/issues/122
• https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html
• https://marc.info/?l=openid-security&m=155154717027534&w=2
• https://security.gentoo.org/glsa/202003-09
• https://github.com/openid/ruby-openid/issues/122
• https://lists.debian.org/debian-lts-announce/2019/10/msg00014.html
• https://marc.info/?l=openid-security&m=155154717027534&w=2
• https://security.gentoo.org/glsa/202003-09

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