Bug 2463335 (CVE-2026-40974)

Summary: CVE-2026-40974 Spring Boot: Cassandra: Spring Boot: Security bypass in Cassandra SSL connections
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: abrianik, anujha, aschwart, asoldano, aszczucz, ataylor, bbaranow, bmaxwell, boliveir, bstansbe, dbruscin, dhanak, dlofthou, drichtar, drosa, ehugonne, fmariani, ggrzybek, gmalinko, gtanzill, ibek, istudens, ivassile, iweiss, janstey, jbuscemi, jraez, jrokos, jwon, kaycoth, kvanderr, mcarlett, mnovotny, mosmerov, mposolda, msvehla, nwallace, parichar, pberan, pbizzarr, pdelbell, pesilva, pjindal, pmackay, rhel-process-autobot, rmartinc, rstancel, rstepani, sausingh, sdawley, smaestri, ssilvert, sthorger, tasato, tcunning, thjenkin, vdosoudi, vmuzikar, watson-tool-maintainers, yfang
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in Spring Boot's Cassandra auto-configuration. This vulnerability allows an adjacent attacker to bypass hostname verification during SSL (Secure Sockets Layer) connection establishment to Cassandra. This could enable a man-in-the-middle attack, potentially leading to unauthorized information disclosure, data tampering, or denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-04-28 00:02:37 UTC
Spring Boot's Cassandra auto-configuration does not perform hostname verification when establishing an SSL connection to Cassandra.

Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); Cassandra SSL auto-configuration. Versions that are no longer supported are also affected per vendor advisory.