CVE Explorer
CVE-2025-8396
Insufficiently specific bounds checking on authorization header could lead to denial of service in the Temporal server on all platforms due to excessive memory allocation.This issue affects all platforms and versions of OSS Server prior to 1.26.3, 1.27.3, and 1.28.1 (i.e., fixed in 1.26.3, 1.27.3, and 1.28.1 and later). Temporal Cloud services are not impacted.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://github.com/temporalio/temporal","defaultStatus":"unaffected","modules":["default claim mapper"],"packageName":"temporal","platforms":["Linux","Windows","MacOS"],"product":"OSS Server","programFiles":["default_jwt_claim_mapper.go"],"repo":"https://github.com/temporalio/temporal","vendor":"Temporal","versions":[{"lessThan":"1.26.3","status":"affected","version":"0","versionType":"semver"},{"lessThan":"1.27.3","status":"affected","version":"1.27.0","versionType":"semver"},{"lessThan":"1.28.1","status":"affected","version":"1.28.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a36d76ffe5815af0a36b8e2ee8d54c28e8568d3c21ffad6e0e09247a426168b6 · sha256:f90e16a2b1d52969… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"Automatable":"YES","Recovery":"NOT_DEFINED","Safety":"NEGLIGIBLE","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/S:N/AU:Y","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NON…
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a36d76ffe5815af0a36b8e2ee8d54c28e8568d3c21ffad6e0e09247a426168b6 · sha256:f90e16a2b1d52969… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770 Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a36d76ffe5815af0a36b8e2ee8d54c28e8568d3c21ffad6e0e09247a426168b6 · sha256:f90e16a2b1d52969… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"url":"https://github.com/temporalio/temporal/releases/tag/v1.26.3"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a36d76ffe5815af0a36b8e2ee8d54c28e8568d3c21ffad6e0e09247a426168b6 · sha256:f90e16a2b1d52969… · /containers/cna/references/0
{"url":"https://github.com/temporalio/temporal/releases/tag/v1.27.3"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a36d76ffe5815af0a36b8e2ee8d54c28e8568d3c21ffad6e0e09247a426168b6 · sha256:f90e16a2b1d52969… · /containers/cna/references/1
{"url":"https://github.com/temporalio/temporal/releases/tag/v1.28.1"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a36d76ffe5815af0a36b8e2ee8d54c28e8568d3c21ffad6e0e09247a426168b6 · sha256:f90e16a2b1d52969… · /containers/cna/references/2
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.