FKIE_CVE-2026-5119
Vulnerability from fkie_nvd - Published: 2026-03-30 07:15 - Updated: 2026-06-17 10:58
Severity
5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
8.2 (High) - CVSS:3.1/
Summary
A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnome | libsoup | - | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| redhat | enterprise_linux | 10.0 |
{
"affected": [
{
"affectedData": [
{
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"cpes": [
"cpe:/o:redhat:enterprise_linux:10.1"
],
"defaultStatus": "affected",
"packageName": "libsoup3",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:3.6.5-3.el10_1.11",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
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"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat",
"versions": [
{
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"version": "0:3.6.5-3.el10_2.11",
"versionType": "rpm"
}
]
},
{
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"cpes": [
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],
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"packageName": "libsoup3",
"product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
"vendor": "Red Hat",
"versions": [
{
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"version": "0:3.6.5-3.el10_0.15",
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}
]
},
{
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"cpes": [
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],
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"vendor": "Red Hat",
"versions": [
{
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}
]
},
{
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"cpe:/o:redhat:enterprise_linux:8::baseos"
],
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"vendor": "Red Hat",
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{
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]
},
{
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"vendor": "Red Hat",
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{
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"versionType": "rpm"
}
]
},
{
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"cpe:/a:redhat:rhel_eus_long_life:8.4::appstream",
"cpe:/o:redhat:rhel_aus:8.4::baseos",
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],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
"vendor": "Red Hat",
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{
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"versionType": "rpm"
}
]
},
{
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],
"defaultStatus": "affected",
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"vendor": "Red Hat",
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{
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"status": "unaffected",
"version": "0:2.62.3-2.el8_4.9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
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"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
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],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.62.3-2.el8_6.9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_aus:8.6::appstream",
"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
],
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"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.62.3-2.el8_6.9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_e4s:8.8::appstream",
"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.62.3-3.el8_8.9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_e4s:8.8::appstream",
"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.62.3-3.el8_8.9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream"
],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.72.0-12.el9_7.6",
"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream"
],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.72.0-16.el9_8.1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.0::appstream"
],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions",
"vendor": "Red Hat",
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{
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"status": "unaffected",
"version": "0:2.72.0-8.el9_0.10",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:rhel_e4s:9.2::appstream"
],
"defaultStatus": "affected",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:2.72.0-8.el9_2.11",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
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],
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"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
"vendor": "Red Hat",
"versions": [
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"status": "unaffected",
"version": "0:2.72.0-8.el9_4.10",
"versionType": "rpm"
}
]
},
{
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"cpes": [
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],
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"packageName": "libsoup",
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}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:6"
],
"defaultStatus": "unknown",
"packageName": "libsoup",
"product": "Red Hat Enterprise Linux 6",
"vendor": "Red Hat"
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:gnome:libsoup:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C5BAC4F4-3ACD-4F4D-920C-F920FD2C5472",
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},
{
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{
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in libsoup. When establishing HTTPS tunnels through a configured HTTP proxy, sensitive session cookies are transmitted in cleartext within the initial HTTP CONNECT request. A network-positioned attacker or a malicious HTTP proxy can intercept these cookies, leading to potential session hijacking or user impersonation."
},
{
"lang": "es",
"value": "Se encontr\u00f3 una vulnerabilidad en libsoup. Al establecer t\u00faneles HTTPS a trav\u00e9s de un proxy HTTP configurado, las cookies de sesi\u00f3n sensibles se transmiten en texto claro dentro de la solicitud HTTP CONNECT inicial. Un atacante posicionado en la red o un proxy HTTP malicioso puede interceptar estas cookies, lo que podr\u00eda conducir al secuestro potencial de la sesi\u00f3n o a la suplantaci\u00f3n de identidad del usuario."
}
],
"id": "CVE-2026-5119",
"lastModified": "2026-06-17T10:58:27.790",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.6,
"impactScore": 4.2,
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 8.2,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
"version": "3.1"
},
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"impactScore": 4.2,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
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"options": [
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},
{
"automatable": "no"
},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-30T16:00:52.017996Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-03-30T07:15:58.350",
"references": [
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:13978"
},
{
"source": "secalert@redhat.com",
"url": "https://access.redhat.com/errata/RHSA-2026:14087"
},
{
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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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{
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{
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:24722"
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{
"source": "secalert@redhat.com",
"tags": [
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"url": "https://access.redhat.com/security/cve/CVE-2026-5119"
},
{
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"tags": [
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2452932"
},
{
"source": "secalert@redhat.com",
"tags": [
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"Issue Tracking"
],
"url": "https://gitlab.gnome.org/GNOME/libsoup/-/issues/502"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-319"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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