CVE-2026-40988

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Source
https://cve.org/CVERecord?id=CVE-2026-40988
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40988.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40988
Published
2026-06-09T23:46:15.589Z
Modified
2026-07-08T08:13:13.260329870Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Unbounded DEFLATE Inflation in SAML 2.0 Service Provider
Details

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.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "5.7.0"
                },
                {
                    "fixed": "5.7.24"
                },
                {
                    "introduced": "5.8.0"
                },
                {
                    "fixed": "5.8.26"
                },
                {
                    "introduced": "6.3.0"
                },
                {
                    "fixed": "6.3.17"
                },
                {
                    "introduced": "6.4.0"
                },
                {
                    "fixed": "6.4.17"
                },
                {
                    "introduced": "6.5.0"
                },
                {
                    "fixed": "6.5.10.2"
                },
                {
                    "introduced": "7.0.0"
                },
                {
                    "fixed": "7.0.5.1"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "5.7.0"
                },
                {
                    "fixed": "5.7.23"
                },
                {
                    "introduced": "5.8.0"
                },
                {
                    "fixed": "5.8.25"
                },
                {
                    "introduced": "6.3.0"
                },
                {
                    "fixed": "6.3.16"
                },
                {
                    "introduced": "6.4.0"
                },
                {
                    "fixed": "6.4.16"
                },
                {
                    "introduced": "6.5.0"
                },
                {
                    "fixed": "6.5.10"
                },
                {
                    "introduced": "7.0.0"
                },
                {
                    "fixed": "7.0.5"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40988.json",
    "cna_assigner": "vmware",
    "cwe_ids": [
        "CWE-400"
    ]
}
References

Affected packages

Git / github.com/spring-projects/spring-security

Affected ranges

Type
GIT
Repo
https://github.com/spring-projects/spring-security
Events
Introduced
0fd0e9335ae3a6ff3538045d098dd6b94679d99e
Fixed
73b077790fcb04ac3712033d3e939daf42264545
Introduced
1d99a7fb14c62354cac00412cce2071892cdf465
Fixed
acd131c3d1902c6422ae27fcd319d76fe7cafd3c
Database specific 
{
    "source": "CPE_RANGE",
    "cpe": "cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "6.5.0"
        },
        {
            "fixed": "6.5.11"
        },
        {
            "introduced": "7.0.0"
        },
        {
            "fixed": "7.0.6"
        }
    ]
}

Affected versions

6.*
6.5.0
6.5.1
6.5.10
6.5.3
6.5.4
6.5.5
6.5.6
6.5.7
6.5.8
6.5.9
7.*
7.0.0
7.0.1
7.0.2
7.0.3
7.0.4
7.0.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40988.json"