CVE-2019-17268 json
omniauth-weibo-oauth2 included a code-execution backdoor inserted by a third party
published 2020-02-07 6 y ago modified 2026-06-17 4 mo ago also GHSA-vr22-43gj-rx3f , EUVD-2022-5414
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- rubygems omniauth-weibo-oauth2 0.5.1
Exploit prediction
2.44% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| rubygems | omniauth-weibo-oauth2 | >=0.4.6, <0.5.1 |
0.5.1 |
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
diff.coditsu.io
/diffs/09a05c37-1b34-49e1-ac94-d4dda40d1ad1#d2h-971595
web, patch, third-party-advisory
-
github.com
/beenhero/omniauth-weibo-oauth2/issues/36
web, patch, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-17268
advisory
-
github.com
/beenhero/omniauth-weibo-oauth2
package
-
github.com
/rubysec/ruby-advisory-db/blob/master/gems/omniauth-weibo-oauth2/CVE-2019-17268.yml
web
Sources
- CVE List CVE-2019-17268
- GitHub Advisory GHSA-vr22-43gj-rx3f
- NVD CVE-2019-17268
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.