CVE-2019-18933

moderate-risk
Published 2019-11-21

In Zulip Server versions from 1.7.0 to before 2.0.7, a bug in the new user signup process meant that users who registered their account using social authentication (e.g., GitHub or Google SSO) in an organization that also allows password authentication could have their personal API key stolen by an unprivileged attacker, allowing nearly full access to the user's account.

Do I need to act?

-
0.43% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Zulip

References (4)

Vendor Advisory https://blog.zulip.org/2019/11/21/zulip-2-0-7-security-release/
Patch https://github.com/zulip/zulip/commit/0c2cc41d2e40807baa5ee2c72987ebfb64ea2eb6
Vendor Advisory https://blog.zulip.org/2019/11/21/zulip-2-0-7-security-release/
Patch https://github.com/zulip/zulip/commit/0c2cc41d2e40807baa5ee2c72987ebfb64ea2eb6
39
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal