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CVE-2019-17268

30
FAUCET Score

CVE-2019-17268 describes a critical code-execution backdoor present in version 0.4.6 of the omniauth-weibo-oauth2 Ruby gem, affecting applications utilizing this specific version. With a CVSS score of 9.8 (CRITICAL), this vulnerability allows unauthenticated attackers to execute arbitrary code remotely with low attack complexity, leading to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion or media coverage regarding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
0.4.6CPE matchmatch criteria
cpe:2.3:a:omniauth-weibo-oauth2_project:omniauth-weibo-oauth2:0.4.6:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.44%
Probability of exploitation in next 30 days
EPSS Percentile
82.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0244 is in the 73rd percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: omniauth-weibo-oauth2Fixed in: 0.5.1

Vendor Advisories (1)

rubygemsGHSA-vr22-43gj-rx3fcritical

omniauth-weibo-oauth2 included a code-execution backdoor inserted by a third party

May 24, 2022

References

diff.coditsu.io / diffs/09a05c37-1b34-49e1-ac94-d4dda40d1ad1
PatchThird Party Advisory
github.com / beenhero/omniauth-weibo-oauth2/issues/36
PatchThird Party Advisory