CVE-2022-36073 — RubyGems

RubyGems.org is the Ruby community gem host. A bug in password & email change confirmation code allowed an attacker to change their RubyGems.org account's email to an unowned email address. Having access to an account whose email has been changed could enable an attacker

01What is this vulnerability?

RubyGems.org is the Ruby community gem host. A bug in password & email change confirmation code allowed an attacker to change their RubyGems.org account's email to an unowned email address. Having access to an account whose email has been changed could enable an attacker to save API keys for that account, and when a legitimate user attempts to create an account with their email (and has to reset…

02Affected products

Vendor	Product	Versions
rubygems	rubygems.org	< 90c9e6aac2d91518b479c51d48275c57de492d4d

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-07T19:45:11.000Z
• Last modified: 2025-04-23T17:14:06.744Z

09References

• github.com — https://github.com/rubygems/rubygems.org/security/advisories/GHSA-8qpf-wf2p-25vg
• github.com — https://github.com/rubygems/rubygems.org/commit/90c9e6aac2d91518b479c51d48275c57…