CVE-2021-27559
CVE-2021-27559 is a medium-severity vulnerability in Monicahq Monica with a CVSS 3.x base score of 5.4. 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-79.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Monicahq Monica
- Published:
- Last modified:
Description
The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
Frequently asked questions
- What is CVE-2021-27559?
- The Contact page in Monica 2.19.1 allows stored XSS via the Nickname field.
- How severe is CVE-2021-27559?
- CVE-2021-27559 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-27559 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-27559?
- CVE-2021-27559 affects Monicahq Monica. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-27559?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-27559 published?
- CVE-2021-27559 was published on 2021-02-22 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:monicahq:monica:2.19.1:*:*:*:*:*:*:*
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