CVE-2025-53864 (CVSS 5.8)

Description

Connect2id Nimbus JOSE + JWT 10.0.x before 10.0.2 and 9.37.x before 9.37.4 allows a remote attacker to cause a denial of service via a deeply nested JSON object supplied in a JWT claim set, because of uncontrolled recursion. NOTE: this is independent of the Gson 2.11.0 issue because the Connect2id product could have checked the JSON object nesting depth, regardless of what limits (if any) were imposed by Gson.

Is your site exposed to CVE-2025-53864?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Weakness Type (CWE)

CWE-674 CWE-674

References

Other References

https://bitbucket.org/connect2id/nimbus-jose-jwt/commits/f7fb882cc08f027c9ceb874acec3b51c6222861c https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/583/stackoverflowerror-due-to-deeply-nested https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/593/back-port-cve-2025-53864-fix-to-9x-branch https://github.com/google/gson/commit/1039427ff0100293dd3cf967a53a55282c0fef6b https://github.com/google/gson/compare/gson-parent-2.11.0...gson-parent-2.12.0 https://bitbucket.org/connect2id/nimbus-jose-jwt/issues/583/stackoverflowerror-due-to-deeply-nested

Frequently Asked Questions

What is CVE-2025-53864? +

Connect2id Nimbus JOSE + JWT 10.0.x before 10.0.2 and 9.37.x before 9.37.4 allows a remote attacker to cause a denial of service via a deeply nested JSON object supplied in a JWT claim set, because of uncontrolled recursion. NOTE: this is independent of the Gson 2.11.0 issue because the Connect2id product could have checked the JSON object nesting depth, regardless of what limits (if any) were imposed by Gson. It has a CVSS v3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2025-53864? +

CVE-2025-53864 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-53864? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-8936

Fixed a VM panic caused by unbounded recursion in the grpcfuse kernel module when a container created deeply nested directories …

CVE-2025-10728

When the module renders a Svg file that contains a <pattern> element, it might end up rendering it recursively leading …

CVE-2025-11896

In Xpdf 4.05 (and earlier), a PDF object loop in a CMap, via the "UseCMap" entry, leads to infinite recursion …

CVE-2026-46689

Kanidm is an identity management platform. Prior to version 1.9.3, a single unauthenticated GET to any /scim/v1/... endpoint with a …

CVE-2026-44844

eml_parser serves as a python module for parsing eml files and returning various information found in the e-mail as well …

CVE-2026-41673

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) `DOMParser` and `XMLSerializer` module. In @xmldom/xmldom prior to …

CVE-2025-53864