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PatchSiren cyber security CVE debrief

CVE-2026-59308 Spring CVE debrief

CVE-2026-59308 debrief based on the supplied source corpus. The vulnerability affects Spring AI version 2.0.0, allowing cached responses to be shared across unrelated contexts due to a flawed context hash in the Semantic Cache support. This could lead to unintended information disclosure. Defenders should assess exposure, verify existing controls, and prioritize remediation. The CVE record and NVD entry provide limited information, necessitating further verification to determine the actual impact and affected scope. Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Review the supplied official advisory or CVE record to to

Vendor
Spring
Product
Spring AI
CVSS
MEDIUM 4.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-21
Original CVE updated
2026-09-16
Advisory published
2026-08-21
Advisory updated
2026-09-16

Who should care

Defenders responsible for Spring AI deployments, particularly those using version 2.0.0, should assess exposure and prioritize remediation to prevent potential misuse of cached responses.

Why it matters

CVE-2026-59308 allows cached responses to be shared across unrelated contexts in Spring AI 2.0.0, potentially leading to unintended information disclosure. Defenders should prioritize verifying exposure, assessing existing controls, and remediating affected deployments.

  • Potential unintended information disclosure due to shared cached responses
  • Verification of existing controls and exposure in Spring AI 2.0.0 deployments
  • Remediation priority for affected deployments to prevent potential misuse

Technical summary

The Semantic Cache support in Spring AI uses a context hash to isolate cached responses between different system prompts. However, this hash could allow cached responses to be shared across unrelated contexts, potentially leading to unintended information disclosure.

Defensive priority

Defenders should prioritize verifying exposure in Spring AI 2.0.0 deployments and assess the effectiveness of existing controls.

Recommended defensive actions

  • Verify Spring AI version and check for updates to 2.0.1 or later
  • Assess exposure in existing deployments and prioritize remediation
  • Monitor for potential misuse of cached responses

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine the actual impact and affected scope.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-59308 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-59308

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-59308 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-59308

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.