CVE-2021-26628
CVE-2021-26628 is a high-severity vulnerability in Maxb Maxboard with a CVSS 3.x base score of 8.1. 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: High (CVSS 3.x base score 8.1)
- CVSS v2: 4.3
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Maxb Maxboard
- Published:
- Last modified:
Description
Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.
Frequently asked questions
- What is CVE-2021-26628?
- Insufficient script validation of the admin page enables XSS, which causes unauthorized users to steal admin privileges. When uploading file in a specific menu, the verification of the files is insufficient. It allows remote attackers to upload arbitrary files disguising them as image files.
- How severe is CVE-2021-26628?
- CVE-2021-26628 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2021-26628 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-26628?
- CVE-2021-26628 affects Maxb Maxboard. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-26628?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-26628 published?
- CVE-2021-26628 was published on 2022-04-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:maxb:maxboard:*:*:*:*:*:*:*:*
More vulnerabilities in Maxb Maxboard
- CVE-2021-26634 — Critical (CVSS 9.8): SQL injection and file upload attacks are possible due to insufficient validation of input values in some parameters…
- CVE-2021-26636 — High (CVSS 8.8): Stored XSS and SQL injection vulnerability in MaxBoard could lead to occur Remote Code Execution, which could lead to…
- CVE-2021-26633 — High (CVSS 7.5): SQL injection and Local File Inclusion (LFI) vulnerabilities in MaxBoard can cause information leakage and privilege…
All CVEs affecting Maxb Maxboard →
Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities
- CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
- CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
- CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
- CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
- CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
- CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…
Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →