TI-2020-10047 Aliases CVE-2020-12637

Zulip Desktop before 5.2.0 has Missing SSL Certificate Validation because all validation…

MEDIUM 43CWE-295Published 2020-05-09 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Spoofing
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-295.

Summary

Zulip Desktop before 5.2.0 has Missing SSL Certificate Validation because all validation was inadvertently disabled during an attempt to recognize the ignoreCerts option.

Why it matters now

EPSS 0.00678 52nd percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:zulipchat:zulip_desktop::::::::	0.5.10 to before 5.2.0	Vulnerable	Zulipchat

cpe:2.3:a:zulipchat:zulip_desktop:*:*:*:*:*:*:*:* Versions 0.5.10 to before 5.2.0 Vulnerable ·Zulipchat

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-12637

References

Advisory 1

https://blog.zulip.org/2020/05/06/zulip-desktop-5-2-0-security-release/

TI-2020-15062 Zulip Desktop before 5.4.3 allows XSS because string escaping is mishandled during… CVSS 3.1MEDIUM 6.1
TI-2020-07555 Zulip Desktop before 4.0.3 loaded untrusted content in an Electron webview with web… CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences