High severity8.6NVD Advisory· Published Feb 11, 2021· Updated Jun 17, 2026
CVE-2021-21307
CVE-2021-21307
Description
Lucee Server is a dynamic, Java based (JSR-223), tag and scripting language used for rapid web application development. In Lucee Admin before versions 5.3.7.47, 5.3.6.68 or 5.3.5.96 there is an unauthenticated remote code exploit. This is fixed in versions 5.3.7.47, 5.3.6.68 or 5.3.5.96. As a workaround, one can block access to the Lucee Administrator.
AI Insight
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Affected products
2Patches
Vulnerability mechanics
References
7- ciacfug.org/blog/updating-lucee-as-part-of-a-vulnerability-alert-responsenvdPatchThird Party Advisory
- github.com/lucee/Lucee/commit/6208ab7c44c61d26c79e0b0af10382899f57e1canvdPatchThird Party Advisory
- packetstormsecurity.com/files/163864/Lucee-Administrator-imgProcess.cfm-Arbitrary-File-Write.htmlnvdExploitThird Party AdvisoryVDB Entry
- github.com/httpvoid/writeups/blob/main/Apple-RCE.mdnvdExploitThird Party Advisory
- dev.lucee.org/t/lucee-vulnerability-alert-november-2020/7643nvdVendor Advisory
- portswigger.net/daily-swig/security-researchers-earn-50k-after-exposing-critical-flaw-in-apple-travel-portalnvdPress/Media CoverageThird Party Advisory
- github.com/lucee/Lucee/security/advisories/GHSA-2xvv-723c-8p7rnvdProduct
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