CVE-2020-12759
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
- Record
CVE-2020-12759- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
- Record
CVE-2020-12759- Updated
- 2026-11-02
EUVDEUVD-2020-5045 No score
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
- Record
EUVD-2020-5045- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pcfx-cw33-q34q No score
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
- Record
GHSA-pcfx-cw33-q34q- Updated
- 2026-11-02
OSV
Zulip Server before 2.1.5 allows reflected XSS via the Dropbox webhook.
- Record
CVE-2020-12759- CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-12759 is a medium vulnerability (CVSS 6.1) in Zulip Server, published August 21, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.67%, the 52nd percentile. No source names a fixed version.