CVE-2021-27559
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
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
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
- Record
CVE-2021-27559- 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
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
- Record
CVE-2021-27559- Updated
- 2026-11-02
EUVDEUVD-2021-14310 No score
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
- Record
EUVD-2021-14310- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2mm4-8fvv-52q9 No score
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
- Record
GHSA-2mm4-8fvv-52q9- Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
- Record
CVE-2021-27559- 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-2021-27559 is a medium vulnerability (CVSS 5.4) in Monicahq Monica, published February 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.59%, the 48th percentile. No source names a fixed version.