by Kastro
Paper/Archive/CVE-2026-47891

CVE-2026-47891

Spring Spring Framework — Spring Framework maxInMemorySize Bypassed in Jaxb2Decoder

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 44.3.443 × 208.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A Spring WebFlux application that relies on the Aalto XML processor to parse XML input does not correctly enforce the maxInMemorySize limit. Spring Framework 7.0.0 - 7.0.8 Spring Framework 6.2.0 - 6.2.19 Spring Framework 6.1.0 - 6.1.28 Spring Framework 6.0.0 - 6.0.30 Spring Framework 5.3.0 - 5.3.49 Spring Framework 5.2.25.RELEASE and earlier

Affected

ProductAffectedFixed inSource
Spring Framework7.0.0 – 7.0.8–CNA
Spring Framework6.2.0 – 6.2.19–CNA
Spring Framework6.1.0 – 6.1.28–CNA
Spring Framework6.0.0 – 6.0.30–CNA
Spring Framework5.3.0 – 5.3.49–CNA
Spring Framework≤ 5.2.25.RELEASE–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refspring.io/security/cve-2026-47891