CVE Explorer
CVE-2026-40988
An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory.
Affected versions:
Spring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"Spring Security","vendor":"Spring","versions":[{"lessThan":"5.7.24","status":"affected","version":"5.7.0","versionType":"custom"},{"lessThan":"5.8.26","status":"affected","version":"5.8.0","versionType":"custom"},{"lessThan":"6.3.17","status":"affected","version":"6.3.0","versionType":"custom"},{"lessThan":"6.4.17","status":"affected","version":"6.4.0","versionType":"custom"},{"lessThan":"6.5.10.2","status":"affected","version":"6.5.0","versionType":"custom"},{"lessThan":"7.0.5.1","status":"affected","version":"7.0.0","versionType":"custom"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:cf5bf83cdb36a9902f506d73ed490a358dc587a71aa6e8fe7a5a4ae24903516e · sha256:f649a38b9b0ddc44… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:cf5bf83cdb36a9902f506d73ed490a358dc587a71aa6e8fe7a5a4ae24903516e · sha256:f649a38b9b0ddc44… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:cf5bf83cdb36a9902f506d73ed490a358dc587a71aa6e8fe7a5a4ae24903516e · sha256:f649a38b9b0ddc44… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://spring.io/security/cve-2026-40988"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:cf5bf83cdb36a9902f506d73ed490a358dc587a71aa6e8fe7a5a4ae24903516e · sha256:f649a38b9b0ddc44… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.