CVE-2021-20105
CVE-2021-20105 is a medium-severity vulnerability in Machform with a CVSS 3.x base score of 6.1. 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-601.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- CVSS v2: 5.8
- EPSS exploit prediction: 1% (50th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-601
- Affected product: Machform
- Published:
- Last modified:
Description
Machform prior to version 16 is vulnerable to an open redirect in Safari_init.php due to an improperly sanitized 'ref' parameter.
Frequently asked questions
- What is CVE-2021-20105?
- Machform prior to version 16 is vulnerable to an open redirect in Safari_init.php due to an improperly sanitized 'ref' parameter.
- How severe is CVE-2021-20105?
- CVE-2021-20105 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2021-20105 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-2021-20105?
- CVE-2021-20105 affects Machform. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-20105?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2021-20105 published?
- CVE-2021-20105 was published on 2021-06-29 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:machform:machform:*:*:*:*:*:*:*:*
More vulnerabilities in Machform
- CVE-2024-37762 — Critical (CVSS 9.9): MachForm up to version 21 is affected by an authenticated unrestricted file upload which leads to a remote code…
- CVE-2018-6411 — Critical (CVSS 9.8): An issue was discovered in Appnitro MachForm before 4.2.3. When the form is set to filter a blacklist, it automatically…
- CVE-2018-6410 — Critical (CVSS 9.8): An issue was discovered in Appnitro MachForm before 4.2.3. There is a download.php SQL injection via the q parameter.
- CVE-2024-37765 — High (CVSS 8.8): Machform up to version 19 is affected by an authenticated Blind SQL injection in the user account settings page.
- CVE-2021-20102 — High (CVSS 8.8): Machform prior to version 16 is vulnerable to cross-site request forgery due to a lack of CSRF tokens in place.
- CVE-2021-20104 — High (CVSS 8.1): Machform prior to version 16 is vulnerable to unauthenticated remote code execution due to insufficient sanitization of…
Other CWE-601 (Open Redirect) vulnerabilities
- CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
- CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
- CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
- CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
- CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
- CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.