CVE-2026-41937
CVE-2026-41937 is a high-severity vulnerability with a CVSS 3.x base score of 7.2. 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-61.
Key facts
- Severity: High (CVSS 3.x base score 7.2)
- CVSS v4: 8.6
- EPSS exploit prediction: 0% (32nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30297
- Weakness: CWE-61
- Published:
- Last modified:
Description
Vvveb before 1.0.8.3 contains an unrestricted file upload vulnerability in the plugin upload endpoint that allows super_admin users to execute arbitrary PHP code by uploading a malicious plugin ZIP file. Attackers can craft a ZIP containing a plugin.php with a valid Slug header and a public/index.php file with arbitrary PHP code, which executes as the web server user once accessed via subsequent unauthenticated HTTP requests to the plugin's public path.
Frequently asked questions
- What is CVE-2026-41937?
- Vvveb before 1.0.8.3 contains an unrestricted file upload vulnerability in the plugin upload endpoint that allows super_admin users to execute arbitrary PHP code by uploading a malicious plugin ZIP file. Attackers can craft a ZIP containing a plugin.php with a valid Slug header and a public/index.php file with arbitrary PHP code, which executes as the web server user once accessed via subsequent unauthenticated HTTP requests to the plugin's public path.
- How severe is CVE-2026-41937?
- CVE-2026-41937 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-41937 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-41937?
- 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.
- Does CVE-2026-41937 have an EU (EUVD) identifier?
- Yes. CVE-2026-41937 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30297.
- When was CVE-2026-41937 published?
- CVE-2026-41937 was published on 2026-05-14 and last updated on 2026-06-17.
References
- https://github.com/givanz/Vvveb/commit/04f0294350ec429e307cd31c2e777a4797c868d6
- https://github.com/givanz/Vvveb/releases/tag/1.0.8.3
- https://www.vulncheck.com/advisories/vvveb-unrestricted-file-upload-rce-via-plugin-upload
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