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CVE-2026-41842 is a denial-of-service vulnerability in Spring Framework affecting applications built with Spring MVC or Spring WebFlux when serving static resources from the filesystem with versioned resource support enabled. The flaw is in the static resource resolution path, specifically involving slow resolution behavior associated with versioned resources through VersionResourceResolver. Crafted requests can trigger pathologically slow filesystem resolution operations, causing each request to hold an HTTP connection open while resource resolution completes. Because the vulnerable logic is shared by Spring MVC and Spring WebFlux static resource handling, repeated malicious requests can consume the application's available HTTP connection capacity and prevent normal request processing. Affected versions include Spring Framework 7.0.0 through 7.0.7, 6.2.0 through 6.2.18, 6.1.0 through 6.1.27, and 5.3.0 through 5.3.48; unsupported versions are also affected.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Spring Framework denial-of-service vulnerability mentioned as background vendor security history.
A Spring Framework vulnerability mentioned only as background; described here as a denial-of-service issue via static resource resolution.
A denial-of-service vulnerability in handling versioned web assets that allows slow requests to tie up server connections.
A denial-of-service vulnerability in Spring Framework affecting Spring MVC and WebFlux applications that serve static resources from the file system with versioned resources support enabled, allowing malicious requests to tie up HTTP connections.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.