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CVE-2026-41721 Spring CVE debrief

CVE-2026-41721 is a Denial of Service (DoS) vulnerability in Spring Data Commons. The vulnerability occurs when Spring Data Web Support is enabled in conjunction with a Controller method using @ProjectedPayload. An attacker can send a specially crafted HTTP request that causes the application to allocate lots of memory, leading to a DoS condition. The affected versions are Spring Data Commons 4.0.0 through 4.0.5; 3.5.0 through 3.5.11; 3.4.0 through 3.4.14; 3.3.0 through 3.3.16; 3.2.0 through 3.2.15; 3.1.0 through 3.1.14; 3.0.0 through 3.0.15; 2.7.0 through 2.7.19.

Vendor
Spring
Product
Spring Data Commons
CVSS
MEDIUM 5.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-07-17
Advisory published
2026-06-10
Advisory updated
2026-07-17

Who should care

Users of Spring Data Commons, particularly those using Spring Data Web Support with Controller methods using @ProjectedPayload.

Technical summary

The vulnerability has a CVSS score of 5.9 and a severity of MEDIUM. It can be exploited by sending a specially crafted HTTP request to the application.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update to a non-vulnerable version of Spring Data Commons.
  • Disable Spring Data Web Support if not needed.
  • Use a Web Application Firewall (WAF) to detect and prevent malicious requests.

Evidence notes

The CVE record was published on 2026-06-10T00:16:51.917Z and last modified on 2026-06-10T19:24:04.320Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-41721 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-41721

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

  • CVE-2026-41721 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-41721

    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.