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No exploitation reportedFix available

CVE-2020-1957

No exploitation reported by the sources we read.

  • Published2020-03-25
  • Fixed in1.5.2

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.

Timeline

dates in UTC
  1. 2020-03-2516:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-1957?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-1957?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Apache shiro
BranchAffectedFixed in
1.5< 1.5.21.5.2
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • shiroUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • shiroUbuntu:20.04:LTSall versions · fixed in 1.3.2-4ubuntu0.1
  • shiroUbuntu:18.04:LTSall versions · fixed in 1.3.2-3~18.04.1
  • shiroDebian:14all versions · fixed in 1.3.2-5
  • shiroDebian:13all versions · fixed in 1.3.2-5
  • shiroDebian:12all versions · fixed in 1.3.2-5
  • shiroDebian:9all versions · fixed in 1.3.2-1+deb9u1
  • shiroDebian:8all versions · fixed in 1.2.3-1+deb8u1

Vendor advisories

  • CVE-2020-1957 Red Hat Product Security3 known affected

    shiro: Spring dynamic controllers, a specially crafted request may cause an authentication bypass

    opendaylight as a component of Red Hat OpenStack Platform 10 (Newton) · opendaylight as a component of Red Hat OpenStack Platform 13 (Queens) · opendaylight.src as a component of Red Hat OpenStack Platform 13 (Queens)

Full record on NVD

Fix

  1. Update Apache shiro to 1.5.2
  2. No fix planned, says the vendor Red Hat Product Security CVE-2020-1957 · 3 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

  • EUVD-2021-0897same flawENISA EUVD · LicenseRef-ENISA-legal-notice
  • GHSA-26gr-cvq3-qxgfsame flawGitHub Advisory Database · CC-BY-4.0
  • DLA-2181-1advisory covering several CVEsDebian · LicenseRef-unstated
  • DLA-2273-1advisory covering several CVEsDebian · LicenseRef-unstated
  • USN-4740-1advisory covering several CVEsUbuntu

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2020-03-25
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-26gr-cvq3-qxgf

Frequently asked questions

What is 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.

Is CVE-2020-1957 actively exploited?

Active exploitation of CVE-2020-1957 has not been confirmed. Its EPSS score was 23.3% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-1957?

CVE-2020-1957 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record