CVE-2020-11989 — Apache Shiro before 1

Apache Shiro before 1.5.3, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.

01What is this vulnerability?

Apache Shiro before 1.5.3, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.

02Affected products

Vendor	Product	Versions
Apache Software Foundation	Apache Shiro	Apache Shiro 1.5.2 - 1.5.3

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-06-22T18:06:37.000Z
• Last modified: 2024-08-04T11:48:57.710Z

09References

• lists.apache.org — https://lists.apache.org/thread.html/r72815a124a119c450b86189767d06848e0d380b179…
• lists.apache.org — https://lists.apache.org/thread.html/r72815a124a119c450b86189767d06848e0d380b179…
• lists.apache.org — https://lists.apache.org/thread.html/rc8b39ea8b3ef71ddc1cd74ffc866546182683c8ade…
• lists.apache.org — https://lists.apache.org/thread.html/r2d2612c034ab21a3a19d2132d47d3e4aa70105008d…
• lists.apache.org — https://lists.apache.org/thread.html/r72815a124a119c450b86189767d06848e0d380b179…
• lists.apache.org — https://lists.apache.org/thread.html/rcf3d8041e1232201fe5d74fc612a193e435784d640…
• lists.apache.org — https://lists.apache.org/thread.html/r408fe60bc8fdfd7c74135249d646d7abadb807ebf9…
• lists.apache.org — https://lists.apache.org/thread.html/rab1972d6b177f7b5c3dde9cfb0a40f03bca75f0eaf…