Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources. More precisely, an application can be vulnerable when all the following are true: * the application is using Spring MVC or Spring WebFlux * the application is serving static resources from the file system * the application is running on a Windows platform When all the conditions above are met, the attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use. This can cause a Denial of Service on the application.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static
    resources. More precisely, an application can be vulnerable when all the following are true: * the
    application is using Spring MVC or Spring WebFlux * the application is serving static resources from the
    file system * the application is running on a Windows platform When all the conditions above are met, the
    attacker can send malicious requests that are slow to resolve and that can keep HTTP connections in use.
    This can cause a Denial of Service on the application. (CVE-2026-22745)

The version of AOS installed on the remote host is prior to 7.6. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-7.6 advisory.

  - NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator     that enables denial of service and possible remote code execution as a result of deep copying a data     structure and erroneously overwriting a destination pointer. An adversary can exploit the vulnerability by     controlling a malicious signed zone and querying a vulnerable Unbound. When DS sub-queries need to suspend     validation due to NSEC3 computational budget exhaustion (introduced in Unbound 1.19.1), Unbound deep-     copies response messages to preserve them across memory region teardown. A struct-assignment bug     overwrites the destination's pointer with the source's pointer. After the sub-query region is freed, the     resumed validator dereferences this dangling pointer, triggering a crash or potentially enabling arbitrary     code execution. Unbound 1.25.1 contains a patch with a fix to preserve the correct pointer when deep     copying the data structure. (CVE-2026-33278)

  - A vulnerability has been found in GNU Binutils 2.45. The affected element is the function elf_swap_shdr in     the library bfd/elfcode.h of the component Linker. The manipulation leads to heap-based buffer overflow.
    The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The     identifier of the patch is 9ca499644a21ceb3f946d1c179c38a83be084490. To fix this issue, it is recommended     to deploy a patch. The code maintainer replied with [f]ixed for 2.46. (CVE-2025-11083)

  - A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in     the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable     characters (which would need escaping), the calculation of the length of the escaped string could     overflow, leading to a potential write off the end of the newly allocated string. (CVE-2025-13601)

  - A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in     grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be     leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention     of secure boot protections. (CVE-2024-45777)

  - In Sudo through 1.9.17p2 before 3e474c2, a failure of a setuid, setgid, or setgroups call, during a     privilege drop before running the mailer, is not a fatal error and can lead to privilege escalation.
    (CVE-2026-35535)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Spring Framework installed on the remote host is 5.3.x prior to 5.3.48, 6.1.x prior to 6.1.27, 6.2.x prior to 6.2.18, or 7.0.x prior to 7.0.7. It is, therefore, affected by multiple vulnerabilities:

  - A WebFlux server application that processes multipart requests creates temp files for parts larger than 10K. Under     some circumstances, temp files may remain not deleted after the request is fully processed, allowing an attacker to     consume available disk space. (CVE-2026-22740)

  - Spring MVC and WebFlux applications are vulnerable to cache poisoning when resolving static resources with caching     and encoded resources resolution enabled. An attacker can poison the resource cache with resources using the wrong     encoding, causing a denial of service. (CVE-2026-22741)

  - Spring MVC and WebFlux applications are vulnerable to Denial of Service attacks when resolving static resources from     the file system on Windows platforms. An attacker can send malicious requests that are slow to resolve and that can     keep HTTP connections in use. (CVE-2026-22745)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
458080	Echo: org.springframework:spring-webflux: security update to 6.2.18	Tenable Cloud Security	Echo Local Security Checks	Local	medium
458080	Echo: org.springframework:spring-webflux: security update to 6.2.18	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	medium
328839	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-7.6)	Nessus	Misc.	Local	critical
314917	Spring Framework 5.3.x < 5.3.48 / 6.1.x < 6.1.27 / 6.2.x < 6.2.18 / 7.0.x < 7.0.7 Multiple DoS	Nessus	Misc.	Local	medium
441326	SCA: security update for org.springframework:spring-webflux, org.springframework:spring-webmvc (GHSA-6p4f-wcwh-5vvm)	Tenable Cloud Security	SCA Checks	Local	medium
441326	SCA: security update for org.springframework:spring-webflux, org.springframework:spring-webmvc (GHSA-6p4f-wcwh-5vvm)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium

Detections

Analytics

CVE-2026-22745

medium

Tenable Plugins

medium

medium

critical

medium

medium

medium