CVE-2026-41851

Spring Framework Denial of Service via Unbounded Cache in SpEL

HIGH

7.5

CVSS Score

Published: June 9, 2026 at 03:51 AM UTC

Updated: July 23, 2026 at 07:32 PM UTC

2 products affected across 2 vendorsSpring FrameworkSpring Framework

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Severity

HIGH7.5

Exploit prediction

EPSS 0.4%

SSVC

No known exploit

Description

Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to a Denial of Service (DoS) attack if the evaluation of a SpEL expression triggers unbounded cache growth. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring Framework · VMware

95%

5.3.0 ≤ v < 5.3.496.1.0 ≤ v < 6.1.286.2.0 ≤ v < 6.2.18.17.0.0 ≤ v < 7.0.7.1

Affected range stops below 5.3.49, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.28, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2.18.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.7.1, so it looks safe — our inference, not a vendor statement

Spring Framework · Spring

60%

5.3.0 ≤ v < 5.3.496.1.0 ≤ v < 6.1.286.2.0 ≤ v < 6.2.18.17.0.0 ≤ v < 7.0.7.15.3.0 6.1.0 6.2.0 7.0.0

Affected range stops below 5.3.49, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.28, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2.18.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.7.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://spring.io/security/cve-2026-41851

References (1)

Vendor Advisory

Source: cverecord

https://spring.io/security/cve-2026-41851

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-770

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