CVE-2020-1957
Improper Authentication in Apache Shiro
CVE-2020-1957 is a critical vulnerability (CVSS 9.8) in Apache Shiro, published March 25, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 23.3%, the 97th percentile. Fixed in org.apache.shiro:shiro-core 1.5.2.
- Severity
- 9.8 CriticalCVSS 3.1, NVD
- Exploit chance
- 23.3%EPSS, 97th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
1.5.2org.apache.shiro:shiro-core +11 more
Description
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.shiro:shiro-coreMaven | before 1.5.2 | 1.5.2 |
shiroDebian:12 | before 1.3.2-5 | 1.3.2-5 |
shiroDebian:13 | before 1.3.2-5 | 1.3.2-5 |
shiroDebian:14 | before 1.3.2-5 | 1.3.2-5 |
shiroDebian:8 | before 1.2.3-1+deb8u1, plus listed versions 1.2.3-1 | 1.2.3-1+deb8u1 |
shiroDebian:9 From an advisory covering 2 CVEs | before 1.3.2-1+deb9u1, plus listed versions 1.3.2-1 | 1.3.2-1+deb9u1 |
org.apache.shiro:shiro-coreMaven | before 1.5.2, plus listed versions 1.0.0-incubating1.1.01.2.01.2.11.2.2 Show 13 moreShow less1.2.31.2.41.2.51.2.61.3.01.3.11.3.21.4.01.4.0-RC21.4.11.4.21.5.01.5.1 | 1.5.2 |
shiroUbuntu:18.04:LTS | before 1.3.2-3~18.04.1, plus listed versions 1.3.2-21.3.2-3~18.04 | 1.3.2-3~18.04.1 |
shiroUbuntu:20.04:LTS | before 1.3.2-4ubuntu0.1, plus listed versions 1.3.2-4 | 1.3.2-4ubuntu0.1 |
shiroUbuntu:18.04:LTS From an advisory covering 2 CVEs | before 1.3.2-3~18.04.1, plus listed versions 1.3.2-21.3.2-3~18.04 | 1.3.2-3~18.04.1 |
shiroUbuntu:20.04:LTS From an advisory covering 2 CVEs | before 1.3.2-4ubuntu0.1, plus listed versions 1.3.2-4 | 1.3.2-4ubuntu0.1 |
shiroUbuntu:Pro:16.04:LTS From an advisory covering 2 CVEs | before 1.2.4-1ubuntu0.1~esm1, plus listed versions 1.2.4-1 | 1.2.4-1ubuntu0.1~esm1 |
What each source reports
NVD Score used
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
CVE-2020-1957- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE ListNo score
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
CVE-2020-1957- Updated
- 2026-11-02
EUVDEUVD-2021-0897No score
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
EUVD-2021-0897- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-26gr-cvq3-qxgf
Improper Authentication in Apache Shiro
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
GHSA-26gr-cvq3-qxgf- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSV
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
CVE-2020-1957- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-1957
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
DEBIAN-CVE-2020-1957- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Show 4 moreShow less
OSVGHSA-26gr-cvq3-qxgf
Improper Authentication in Apache Shiro
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
GHSA-26gr-cvq3-qxgf- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-287
- Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-1957
Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.
- Record
UBUNTU-CVE-2020-1957- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-12
OSVUSN-4740-1No score
shiro vulnerabilities
It was discovered that Apache Shiro mishandled specially crafted requests. An attacker could use this vulnerability to bypass authentication mechanisms.
- Record
USN-4740-1- Updated
- 2026-11-02
OSVUSN-9061-1No score
shiro vulnerabilities
It was discovered that Apache Shiro incorrectly handled certain specially crafted requests when used with Spring dynamic controllers. A remote attacker could possibly use this issue to bypass authentication. (CVE-2020-1957, CVE-2020-11989)
- Record
USN-9061-1- Updated
- 2026-11-13
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases | OSV | |
| affected, references | OSV | |
| affected, facts | ||
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
References
lists.apache.org/thread.html/r17f371fc89d34df2d0c8131473fbc68154290e1be238895648f5a1e6%40%3Cdev.shiro.apache.org%3E
lists.debian.org/debian-lts-announce/2020/04/msg00014.html
Show 17 moreShow less
nvd.nist.gov/vuln/detail/CVE-2020-1957
github.com/advisories/GHSA-26gr-cvq3-qxgf
security-tracker.debian.org/tracker/CVE-2020-1957
ubuntu.com/security/CVE-2020-1957
openwall.com/lists/oss-security/2020/03/23/2
cve.org/CVERecord?id=CVE-2020-1957