What’s Vulnerable › Vulnerabilities

CVE-2019-19775

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-12-18 · updated 2026-06-17
• Weakness: CWE-601

Description

The image thumbnailing handler in Zulip Server versions 1.9.0 to before 2.0.8 allowed an open redirect that was visible to logged-in users.

Affected products

• zulip: from 1.9.0 before 2.0.8 — fixed in 2.0.8

How to fix

Upgrade to a fixed version: zulip 2.0.8. Check the vendor advisory for mitigations.

References

• https://blog.zulip.org/2019/12/13/zulip-server-2-0-8-security-release/
• https://github.com/zulip/zulip/commit/b7c87a4d82397a5e6ac169b6098bed0b1ae7a583
• https://blog.zulip.org/2019/12/13/zulip-server-2-0-8-security-release/
• https://github.com/zulip/zulip/commit/b7c87a4d82397a5e6ac169b6098bed0b1ae7a583

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