CVE-2026-41848 is a low-severity (CVSS 3.7) CWE-1333 vulnerability in org.springframework:spring-core. A fix is available for org.springframework:spring-core — see the affected versions and patch details below.
Spring Framework Denial of Service via AntPathMatcher
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2026-41848.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
org.springframework:spring-core☕org.springframework:spring-core☕org.springframework:spring-core☕org.springframework:spring-coreReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Applications may be vulnerable to a Regular Expression Denial of Service (ReDoS) attack if an attacker is able to provide a pattern which is then directly or indirectly supplied to one of the following methods in AntPathMatcher: match(String pattern, String path), matchStart(String pattern, String path), extractUriTemplateVariables(String pattern, String path).
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.springframework:spring-core | ≥ 7.0.0&&< 7.0.8 | 7.0.8org.springframework:spring-core:7.0.8 |
| ☕Maven | org.springframework:spring-core | ≥ 6.2.0&&< 6.2.19 | 6.2.19org.springframework:spring-core:6.2.19 |
| ☕Maven | org.springframework:spring-core | ≥ 6.1.0 | No fix |
| ☕Maven | org.springframework:spring-core | all versions | No fix |
Affected Products
spring frameworkvmwareDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework:spring-core, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.springframework:spring-core to 7.0.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-41848 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
A flaw was found in Spring Framework. Applications may be vulnerable to a Regular Expression Denial of Service (ReDoS) attack if an attacker is able to provide a pattern which is then supplied to AntPathMatcher methods (match, matchStart, or extractUriTemplateVariables).
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.Source: Red Hat security advisory for CVE-2026-41848 (CC BY 4.0)
Frequently Asked Questions
Is CVE-2026-41848 in your dependencies?
Find it across Maven, including transitive dependencies.