CVE-2025-11021
Full vulnerability record from the local CVENow database.
Description
A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Deferred
Source identifier
Published
2025-09-26 09:15:31.370000
Last modified
2026-11-04 22:17:26.697000
View original CVE JSON
{
"id": "CVE-2025-11021",
"sourceIdentifier": "[email protected]",
"published": "2025-09-26T09:15:31.370",
"lastModified": "2026-11-04T22:17:26.697",
"vulnStatus": "Deferred",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the cookie date handling logic of the libsoup HTTP library, widely used by GNOME and other applications for web communication. When processing cookies with specially crafted expiration dates, the library may perform an out-of-bounds memory read. This flaw could result in unintended disclosure of memory contents, potentially exposing sensitive information from the process using libsoup."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"defaultStatus": "unaffected",
"collectionURL": "https://gitlab.gnome.org/GNOME/libsoup/",
"packageName": "libsoup",
"versions": [
{
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"versionType": "semver",
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}
]
},
{
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"packageName": "libsoup3",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.0"
],
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{
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}
]
},
{
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}
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{
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{
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}
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{
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{
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"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_e4s:8.6::baseos",
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],
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}
]
},
{
"vendor": "Red Hat",
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"defaultStatus": "affected",
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"packageName": "libsoup",
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{
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"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_e4s:8.6::baseos",
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{
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}
]
},
{
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}
]
},
{
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}
]
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{
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{
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}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2025-09-26T15:34:18.202277Z",
"id": "CVE-2025-11021",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
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}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-125"
}
]
}
],
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2025:18183",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:19713",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:19714",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:20959",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21032",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21655",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21656",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21657",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21664",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21665",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21666",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:21772",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2025:22013",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2025-11021",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2399627",
"source": "[email protected]"
},
{
"url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/459",
"source": "[email protected]"
}
]
}