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    CVE-2020-17523

    Apache Shiro before 1.7.1, when using Apache Shiro with Spring, a specially crafted HTTP request may cause an authentication bypass.

    Published:Jan 1, 2021
    Last Modified:Nov 21, 2024
    EPS:Feb 3, 2021
    EPSS Score:0.88767
    CVSS Score:9.8

    Affected Products

    Vendor
    Apache
    Product
    Shiro

    Exploits

    https://github.com/jweny/shiro-cve-2020-17523

    Related CVEs

    CVE-2026-58301 (CVSS 5.9) — When Apache Shiro is used with the Jakarta EE integration module, a low-privileged user can craft an HTTP requ…
    CVE-2026-56091 (CVSS 8.2) — When using Apache Shiro with the shiro-guice module in a web servlet context, a specially crafted HTTP request…
    CVE-2026-56130 (CVSS 2) — "Remember me" cookie age is not verified on the server. This potentially allows an attacker to intercept a val…
    CVE-2026-49268 (CVSS 8.8) — A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultL…
    CVE-2026-48589 (CVSS 0) — Apache Shiro’s Jakarta EE module used the HTTP Referer header in certain cases to issue redirect after a user …
    CVE-2026-44598 (CVSS 5.1) — With valid login credentials, URL Redirection to Untrusted Site ('Open Redirect'), Server-Side Request Forgery…
    CVE-2026-43828 (CVSS 5.9) — Default configurations of Apache Shiro send sensitive cookies in HTTPS session without 'Secure' attribute. …
    CVE-2026-43827 (CVSS 5.9) — Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro…
    CVE-2026-23901 (CVSS 1) — Observable Timing Discrepancy vulnerability in Apache Shiro. This issue affects Apache Shiro: from 1.*, 2.* b…
    CVE-2026-23903 (CVSS 5.3) — Authentication Bypass by Alternate Name vulnerability in Apache Shiro. This issue affects Apache Shiro: befor…

    References

    https://lists.apache.org/thread.html/r5b93ddf97e2c4cda779d22fab30539bdec454cfa5baec4ad0ffae235%40%3Cgitbox.activemq.apache.org%3E
    https://lists.apache.org/thread.html/r679ca97813384bdb1a4c087810ba44d9ad9c7c11583979bb7481d196%40%3Cdev.shiro.apache.org%3E
    https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.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/rce5943430a6136d37a1f2fc201d245fe094e2727a0bc27e3b2d43a39%40%3Cdev.shiro.apache.org%3E
    https://lists.apache.org/thread.html/rd4b613e121438b97e3eb263cac3137caddb1dbd8f648b73a4f1898a6%40%3Cissues.activemq.apache.org%3E
    https://lists.apache.org/thread.html/re25b8317b00a50272a7252c4552cf1a81a97984cc2111ef7728e48e0%40%3Cdev.shiro.apache.org%3E
    https://lists.apache.org/thread.html/r5b93ddf97e2c4cda779d22fab30539bdec454cfa5baec4ad0ffae235%40%3Cgitbox.activemq.apache.org%3E
    https://lists.apache.org/thread.html/r679ca97813384bdb1a4c087810ba44d9ad9c7c11583979bb7481d196%40%3Cdev.shiro.apache.org%3E
    https://lists.apache.org/thread.html/r8244fd0831db894d5e89911ded9c72196d395a90ae655414d23ed0dd%40%3Cusers.activemq.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/rce5943430a6136d37a1f2fc201d245fe094e2727a0bc27e3b2d43a39%40%3Cdev.shiro.apache.org%3E
    https://lists.apache.org/thread.html/rd4b613e121438b97e3eb263cac3137caddb1dbd8f648b73a4f1898a6%40%3Cissues.activemq.apache.org%3E
    https://lists.apache.org/thread.html/re25b8317b00a50272a7252c4552cf1a81a97984cc2111ef7728e48e0%40%3Cdev.shiro.apache.org%3E

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High