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CVE-2026-41854 Spring CVE debrief

A medium-severity vulnerability, CVE-2026-41854, was found in Spring Framework. The issue arises from incorrect host parsing in UriComponentsBuilder, which can lead to a server-side request forgery (SSRF) attack. The affected versions are Spring Framework 7.0.0 through 7.0.7 and 6.2.0 through 6.2.18.

Vendor
Spring
Product
Spring Framework
CVSS
MEDIUM 4.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-07-17
Advisory published
2026-06-09
Advisory updated
2026-07-17

Who should care

Developers and administrators using Spring Framework versions 7.0.0 through 7.0.7 and 6.2.0 through 6.2.18 should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

CVE-2026-41854 is a medium-severity vulnerability with a CVSS score of 4.2. It was published on [cvePublishedAt] and modified on [cveModifiedAt]. The vulnerability is caused by incorrect host parsing in UriComponentsBuilder, which can lead to SSRF attacks.

Defensive priority

medium

Recommended defensive actions

  • Update to Spring Framework version 6.2.19 or later
  • Update to Spring Framework version 7.0.8 or later
  • Implement additional security measures to prevent SSRF attacks

Evidence notes

The CVE record and NVD detail can be found at [resourceLinkAnnotations:cve-org] and [resourceLinkAnnotations:nvd], respectively. The vendor advisory is available at [resourceLinkAnnotations:ref-4].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-41854 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-41854

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

  • CVE-2026-41854 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-41854

    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.