How severe is CVE-2019-17268?

CVE-2019-17268 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-17268 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-17268?

CVE-2019-17268 affects Omniauth-weibo-oauth2 Project Omniauth-weibo-oauth2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-17268?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-17268 published?

CVE-2019-17268 was published on 2020-02-07 and last updated on 2026-06-17.

CVE-2019-17268

CVE-2019-17268 is a critical-severity vulnerability in Omniauth-weibo-oauth2 Project Omniauth-weibo-oauth2 with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Omniauth-weibo-oauth2 Project Omniauth-weibo-oauth2
Published: 2020-02-07
Last modified: 2026-06-17

Description

The omniauth-weibo-oauth2 gem 0.4.6 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party. Versions through 0.4.5, and 0.5.1 and later, are unaffected.

Frequently asked questions

What is CVE-2019-17268?: The omniauth-weibo-oauth2 gem 0.4.6 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party. Versions through 0.4.5, and 0.5.1 and later, are unaffected.
How severe is CVE-2019-17268?: CVE-2019-17268 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-17268 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-17268?: CVE-2019-17268 affects Omniauth-weibo-oauth2 Project Omniauth-weibo-oauth2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-17268?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-17268 published?: CVE-2019-17268 was published on 2020-02-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:omniauth-weibo-oauth2_project:omniauth-weibo-oauth2:0.4.6:*:*:*:*:ruby:*:*

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