CVE-2019-19775
CVE-2019-19775 is a medium-severity vulnerability in Zulip Zulip Server with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 5.8
- EPSS exploit prediction: 1% (54th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-601
- Affected product: Zulip Zulip Server
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2019-19775?
- 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.
- How severe is CVE-2019-19775?
- CVE-2019-19775 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2019-19775 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-19775?
- CVE-2019-19775 affects Zulip Zulip Server. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-19775?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-19775 published?
- CVE-2019-19775 was published on 2019-12-18 and last updated on 2026-06-17.
References
- https://blog.zulip.org/2019/12/13/zulip-server-2-0-8-security-release/
- https://github.com/zulip/zulip/commit/b7c87a4d82397a5e6ac169b6098bed0b1ae7a583
Affected products (1)
- cpe:2.3:a:zulip:zulip_server:*:*:*:*:*:*:*:*
More vulnerabilities in Zulip Zulip Server
- CVE-2019-18933 — Critical (CVSS 9.8): 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…
- CVE-2020-15070 — High (CVSS 8.8): Zulip Server 2.x before 2.1.7 allows eval injection if a privileged attacker were able to write directly to the…
- CVE-2017-0910 — High (CVSS 8.8): In Zulip Server before 1.7.1, on a server with multiple realms, a vulnerability in the invitation system lets an…
- CVE-2025-31478 — High (CVSS 8.2): Zulip is an open-source team collaboration tool. Zulip supports a configuration where account creation is limited…
- CVE-2023-33186 — High (CVSS 8.2): Zulip is an open-source team collaboration tool with unique topic-based threading that combines the best of email and…
- CVE-2024-36612 — High (CVSS 7.5): Zulip from 8.0 to 8.3 contains a memory leak vulnerability in the handling of popovers.
All CVEs affecting Zulip Zulip Server →
Other CWE-601 (Open Redirect) vulnerabilities
- CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
- CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
- CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
- CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
- CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
- CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.