CVE-2021-21494
CVE-2021-21494 is a medium-severity vulnerability in Mk-auth with a CVSS 3.x base score of 4.8. 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-732.
Key facts
- Severity: Medium (CVSS 3.x base score 4.8)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-732
- Affected product: Mk-auth
- Published:
- Last modified:
Description
MK-AUTH through 19.01 K4.9 allows XSS via the admin/logs_ajax.php tipo parameter. An attacker can leverage this to read the centralmka2 (session token) cookie, which is not set to HTTPOnly.
Frequently asked questions
- What is CVE-2021-21494?
- MK-AUTH through 19.01 K4.9 allows XSS via the admin/logs_ajax.php tipo parameter. An attacker can leverage this to read the centralmka2 (session token) cookie, which is not set to HTTPOnly.
- How severe is CVE-2021-21494?
- CVE-2021-21494 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-21494 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-21494?
- CVE-2021-21494 affects Mk-auth. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-21494?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-21494 published?
- CVE-2021-21494 was published on 2021-01-04 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mk-auth:mk-auth:*:*:*:*:*:*:*:*
More vulnerabilities in Mk-auth
- CVE-2020-14072 — Critical (CVSS 9.8): An issue was discovered in MK-AUTH 19.01. It allows command execution as root via shell metacharacters to /auth admin…
- CVE-2020-14070 — Critical (CVSS 9.8): An issue was discovered in MK-AUTH 19.01. There is authentication bypass in the web login functionality because…
- CVE-2020-14068 — Critical (CVSS 9.8): An issue was discovered in MK-AUTH 19.01. The web login functionality allows an attacker to bypass authentication and…
- CVE-2023-27246 — High (CVSS 8.8): An arbitrary file upload vulnerability in the Virtual Disk of MK-Auth 23.01K4.9 allows attackers to execute arbitrary…
- CVE-2021-21495 — High (CVSS 8.8): MK-AUTH through 19.01 K4.9 allows CSRF for password changes via the central/executar_central.php?acao=altsenha_princ…
- CVE-2020-14069 — Medium (CVSS 6.8): An issue was discovered in MK-AUTH 19.01. There are SQL injection issues in mkt/ PHP scripts, as demonstrated by…
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