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MEDIUM severity

CVE-2026-41843 — spring-webmvc

MEDIUM

CVE-2026-41843 is a medium-severity (CVSS 5.9) Path Traversal vulnerability in org.springframework:spring-webmvc. A fix is available for org.springframework:spring-webmvc — see the affected versions and patch details below.

Spring Framework Path Traversal via Versioned Static Resources in Spring MVC and WebFlux

Published
Updated
Affected
8 pkgs
Patched
4 / 8
Exploits
None indexed
Exploitation data as of Oct 27, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

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-2026-41843.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk-0.02%
Lower risk than most CVEs31th percentile — riskier than 31% of all scored CVEsHighest risk
0.00%0.30%0.59%0.89%0.3%0.3%0.4%0.4%0.4%Jul 26Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2026-41843 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 398,142 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

8 pkgs affected
☕org.springframework:spring-webmvc☕org.springframework:spring-webflux☕org.springframework:spring-webmvc☕org.springframework:spring-webflux☕org.springframework:spring-webmvc☕org.springframework:spring-webflux☕org.springframework:spring-webmvc☕org.springframework:spring-webflux

Real-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

Spring MVC and WebFlux applications are vulnerable to Path Traversal attacks when resolving static resources.

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

8 total 4 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.springframework:spring-webmvc≥ 7.0.0&&< 7.0.87.0.8org.springframework:spring-webmvc:7.0.8
☕Mavenorg.springframework:spring-webflux≥ 7.0.0&&< 7.0.87.0.8org.springframework:spring-webflux:7.0.8
☕Mavenorg.springframework:spring-webmvc≥ 6.2.0&&< 6.2.196.2.19org.springframework:spring-webmvc:6.2.19
☕Mavenorg.springframework:spring-webflux≥ 6.2.0&&< 6.2.196.2.19org.springframework:spring-webflux:6.2.19
☕Mavenorg.springframework:spring-webmvc≥ 6.1.0No fix
☕Mavenorg.springframework:spring-webflux≥ 6.1.0No fix

Affected Products

1 product · 4 configurations
Application
spring frameworkvmware
≥ 7.0.0 && < 7.0.7.1
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework:spring-webmvc, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.springframework:spring-webmvc to 7.0.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2026-41843 is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

Spring MVC and WebFlux applications are vulnerable to Path Traversal attacks when resolving static resources. 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.
O3 Security · Impact-Aware SCA

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CVE-2026-41843: spring-webmvc — Fixed in 7.0.8