Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to a Denial of Service (DoS) attack if the evaluation of a SpEL expression triggers unbounded cache growth. 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.

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

  - Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to
    a Denial of Service (DoS) attack if the evaluation of a SpEL expression triggers unbounded cache growth.
    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. (CVE-2026-41851)

The version of Spring Framework installed on the remote host is 5.3.x prior to 5.3.49, 6.1.x prior to 6.1.28, 6.2.x prior to 6.2.18.1, or 7.0.x prior to 7.0.7.1. It is, therefore, affected by multiple vulnerabilities:

  - IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be     possible to exploit in combination with inadequate authorization rules. (CVE-2026-41838)

  - 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, matchStart, extractUriTemplateVariables. (CVE-2026-41848)

  - In an untrusted JMS environment, org.springframework.jms.support.converter.MappingJackson2MessageConverter and     org.springframework.jms.support.converter.JacksonJsonMessageConverter allow arbitrary class instantiation, which     can lead to unauthorized actions via gadget class deserialization. (CVE-2026-41855)

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Applications which accept user-supplied Spring Expression Language (SpEL) expressions may be vulnerable to     a Denial of Service (DoS) attack if the evaluation of a SpEL expression triggers unbounded cache growth.
    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. (CVE-2026-41851)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
445503	SCA: security update for org.springframework:spring-expression (GHSA-wxpp-56q6-5pcg)	Tenable Cloud Security	SCA Checks	Local	high
445503	SCA: security update for org.springframework:spring-expression (GHSA-wxpp-56q6-5pcg)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
320777	Spring Framework 5.3.x < 5.3.49 / 6.1.x < 6.1.28 / 6.2.x < 6.2.18.1 / 7.0.x < 7.0.7.1 Multiple Vulnerabilities	Nessus	Misc.	Local	critical
320092	Linux Distros Unpatched Vulnerability : CVE-2026-41851	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-41851

high

Tenable Plugins

high

high

critical

high