CVE-2021-26834
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads...
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads, and the code execution will happen immediately on markdown view mode.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads, and the code execution will happen immediately on markdown view mode.
- Record
CVE-2021-26834- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads, and the code execution will happen immediately on markdown view mode.
- Record
CVE-2021-26834- Updated
- 2026-11-02
EUVDEUVD-2021-13618 No score
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads, and the code execution will happen immediately on markdown view mode.
- Record
EUVD-2021-13618- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-x3r7-v8h4-8v37 No score
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads...
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads, and the code execution will happen immediately on markdown view mode.
- Record
GHSA-x3r7-v8h4-8v37- Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
A cross-site scripting (XSS) vulnerability exists in Znote 0.5.2. An attacker can insert payloads, and the code execution will happen immediately on markdown view mode.
- Record
CVE-2021-26834- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/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-2021-26834 is a medium vulnerability (CVSS 5.4) in Znote, published June 18, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.69%, the 53rd percentile. No source names a fixed version.