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PatchSiren cyber security CVE debrief

CVE-2026-59291 Spring CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-08-27T20:17:55.227Z and has not been modified since then. CVE-2026-59291 is a potential arbitrary file read and SSRF vulnerability in Spring Cloud Function versions 4.2.0-4.2.7, 4.3.0-4.3.4, and 5.0.0-5.0.3. The CVSS score is 2 (Low). The vulnerability could allow attackers to read arbitrary files and perform SSRF attacks. Users of affected Spring Cloud Function versions should review and apply patches or updates. The CVE record and NVD detail page provide some information about the vulnerability, but further verification is needed to confirm affected deployments and assess potential impact. Defenders should review the official CVE and NVD records, verify affected versions and configurations, and monitor for potential exploitation attempts. Limited evidence is available, so defensive review and verification are necessary to confirm affected deployments and assess potential impact.

Vendor
Spring
Product
Spring Cloud Function
CVSS
LOW 2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-27
Original CVE updated
2026-08-31
Advisory published
2026-08-27
Advisory updated
2026-08-31

Who should care

Users of affected Spring Cloud Function versions (4.2.0-4.2.7, 4.3.0-4.3.4, and 5.0.0-5.0.3) should review and apply patches or updates. Security teams and operators managing Spring Cloud Function deployments should verify affected versions and configurations, monitor for potential exploitation attempts, and review compensating controls for exposed systems. Vulnerability management and security teams should prioritize defensive review and remediation efforts based on the CVSS score and potential impact.

Technical summary

CVE-2026-59291 is a potential arbitrary file read and SSRF vulnerability in Spring Cloud Function versions 4.2.0-4.2.7, 4.3.0-4.3.4, and 5.0.0-5.0.3. The CVSS score is 2 (Low). The vulnerability could allow attackers to read arbitrary files and perform SSRF attacks. Users of affected Spring Cloud Function versions should review and apply patches or updates. The CVE record and NVD detail page provide some information about the vulnerability, but further verification is needed to confirm affected deployments and assess potential impact.

Defensive priority

Low-priority defensive review recommended due to limited evidence and low CVSS score.

Recommended defensive actions

  • Review and verify affected Spring Cloud Function versions and configurations
  • Apply vendor patches or updates if available
  • Monitor for potential exploitation attempts
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
  • Review compensating controls for exposed systems while remediation is scheduled and verified

Evidence notes

The evidence for CVE-2026-59291 is limited. The CVE record and NVD detail page provide some information about the potential arbitrary file read and SSRF vulnerability in Spring Cloud Function versions 4.2.0-4.2.7, 4.3.0-4.3.4, and 5.0.0-5.0.3. However, further verification is needed to confirm affected deployments and assess potential impact. Defenders should review the official CVE and NVD records, verify affected versions and configurations, and monitor for potential exploitation attempts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-59291 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-59291

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

  • CVE-2026-59291 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-59291

    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.