CVE Explorer

CVE-2026-43827

Default configurations of Apache Shiro have a session fixation vulnerability. This issue affects Apache Shiro from 1.0 to 2.1.0, and 3.0.0-alpha-1. Users are recommended to upgrade to version 2.1.1, or 3.0.0-alpha-2 or later, which fixes the issue. In the affected versions, when a session already exists, it is not invalidated upon successful login, nor is a new session being generated with a new ID.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:67423579f4db6455af31ef008717db15ab846adc28517e973bbf7b9d69b32c93

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"org.apache.shiro:shiro-core","product":"Apache Shiro","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"2.1.0","status":"affected","version":"1.0","versionType":"semver"},{"lessThanOrEqual":"3.0.0-alpha-1","status":"affected","version":"3.0.0-alpha-0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:6e46585c790894af0a6d86197afe1d0ce7de20e96071ef4b91f65de01c242987 · sha256:0bbcfaf02b00e3d8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"YES","Recovery":"USER","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"AMBER","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y/R:U/RE:L/U:Amber","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpac…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:6e46585c790894af0a6d86197afe1d0ce7de20e96071ef4b91f65de01c242987 · sha256:0bbcfaf02b00e3d8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-384","description":"CWE-384 Session Fixation","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:6e46585c790894af0a6d86197afe1d0ce7de20e96071ef4b91f65de01c242987 · sha256:0bbcfaf02b00e3d8… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"url":"http://www.openwall.com/lists/oss-security/2026/05/25/6"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6e46585c790894af0a6d86197afe1d0ce7de20e96071ef4b91f65de01c242987 · sha256:0bbcfaf02b00e3d8… · /containers/adp/0/references/0

{"tags":["vendor-advisory"],"url":"https://shiro.apache.org/security-reports.html#cve_2026_43827"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:6e46585c790894af0a6d86197afe1d0ce7de20e96071ef4b91f65de01c242987 · sha256:0bbcfaf02b00e3d8… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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