Spring Framework Algorithmic Denial of Service via SpEL Expressions
Published Jun 9, 2026
7.5
HIGHCVSS 3.1
EPSS 0.46%
Description
Applications that evaluate user-supplied Spring Expression Language (SpEL) expressions are vulnerable to an Algorithmic Denial of Service (DoS). By providing a specially crafted expression, an attacker can trigger excessive resource consumption during evaluation, leading to application degradation or unavailability.
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 products
-
- Version 5.3.0StatusaffectedConstraints<5.3.49
- Version 6.1.0StatusaffectedConstraints<6.1.28
- Version 6.2.0StatusaffectedConstraints<6.2.18.1
- Version 7.0.0StatusaffectedConstraints<7.0.7.1
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spring | Spring Framework | unaffected |
|
- ≥ 5.3.0 · < 5.3.49
- ≥ 6.1.0 · < 6.1.28
- ≥ 6.2.0 · < 6.2.18.1
- ≥ 7.0.0 · < 7.0.7.1
No data.
OpenShift Developer Tools and Services
spring-expression
Fix deferred
Red Hat OpenShift Dev Spaces
spring-expression
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| OpenShift Developer Tools and Services | spring-expression | Fix deferred | n/a |
| Red Hat OpenShift Dev Spaces | spring-expression | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
A flaw was found in Spring Framework. Applications that evaluate user-supplied Spring Expression Language (SpEL) expressions are vulnerable to an Algorithmic Denial of Service (DoS). By providing a specially crafted expression, an attacker can trigger excessive resource consumption during evaluation, leading to application degradation or unavailability.
Red Hat mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Jun 9, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v4
- EPSS v5
Percentile over time
- EPSS v4
- EPSS v5
Table of values (3 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.46% (0.00460) | 37.54th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.36% (0.00359) | 27.56th | v5 (v2026.06.15) |
| Jun 9, 2026 | 0.01% (0.00013) | 2.10th | v4 (v2025.03.14) |
References (8)
- https://access.redhat.com/security/cve/CVE-2026-41850 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2486709 Issue Tracking
- https://github.com/advisories/GHSA-r5w3-xv2f-j59q Advisory
- https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19
- https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8
- https://nvd.nist.gov/vuln/detail/CVE-2026-41850
- https://spring.io/security/cve-2026-41850 Vendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-41850
Change history (0)
No recorded changes yet.