What’s Vulnerable › Vulnerabilities
CVE-2020-13933
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 44.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-08-17 · updated 2026-06-17
Description
Apache Shiro before 1.6.0, when using Apache Shiro, a specially crafted HTTP request may cause an authentication bypass.
Affected products
- Apache Software Foundation Apache Shiro: before 1.6.0 — fixed in 1.6.0
- Debian Linux: 9.0
How to fix
Upgrade to a fixed version: Apache Software Foundation Apache Shiro 1.6.0. Check the vendor advisory for mitigations.
References
- https://lists.apache.org/thread.html/r18b45d560d76c4260813c802771cc9678aa651fb8340e09366bfa198%40%3Cdev.geode.apache.org%3E
- https://lists.apache.org/thread.html/r4506cedc401d6b8de83787f8436aac83956e411d66848c84785db46d%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r4c1e1249e9e1acb868db0c80728c13f448d07333da06a0f1603c0a33%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r539f87706094e79c5da0826030384373f0041068936912876856835f%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r575301804bfac87a064359cf4b4ae9d514f2d10db7d44120765f4129%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r6ea0224c1971a91dc6ade1f22508119a9c3bd56cef656f0c44bbfabb%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r70098e336d02047ce4d4e69293fe8d558cd68cde06f6430398959bc4%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r70b907ccb306e9391145e2b10f56cc6914a245f91720a17a486c020a%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r8097b81905f2a113ebdf925bcbc6d8c9d6863c807c9ee42e1e7c9293%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r852971e28f54cafa7d325bd7033115c67d613b112a2a1076817390ac%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r9d93dfb5df016b1a71a808486bc8f9fbafebbdbc8533625f91253f1d%40%3Cdev.shiro.apache.org%3E
- https://lists.apache.org/thread.html/r9ea6d8560d6354d41433ad006069904f0ed083527aa348b5999261a7%40%3Cdev.geode.apache.org%3E
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