Vulnerability-Lookup

GHSA-GMF9-8JMV-V2Q8

Vulnerability from github – Published: 2026-07-21 21:32 – Updated: 2026-07-21 21:32

Details

SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.

Severity

3.4 (Low)


                  
                    CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-12547"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-201"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-21T19:17:09Z",
    "severity": "LOW"
  },
  "details": "SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials.",
  "id": "GHSA-gmf9-8jmv-v2q8",
  "modified": "2026-07-21T21:32:39Z",
  "published": "2026-07-21T21:32:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12547"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2026-12547"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2489994"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.gnome.org/GNOME/libsoup/-/work_items/506"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-12547 (GCVE-0-2026-12547)

Vulnerability from cvelistv5 – Published: 2026-07-21 18:35 – Updated: 2026-07-21 19:14

Title

Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on proxy switch

Summary

Severity

3.4 (Low)


                        
                          CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-201 - Insertion of Sensitive Information Into Sent Data

Assigner

redhat

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-12547	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2489994	issue-trackingx_refsource_REDHAT
https://gitlab.gnome.org/GNOME/libsoup/-/work_items/506

Impacted products

1 product

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10

Date Public

2026-04-25 00:00

Credits

Red Hat would like to thank Cavid (Yes We Hack) for reporting this issue.

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-12547",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-21T19:02:39.410894Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-21T19:06:28.077Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
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          "defaultStatus": "affected",
          "packageName": "libsoup3",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        }
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          "value": "Red Hat would like to thank Cavid (Yes We Hack) for reporting this issue."
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      "descriptions": [
        {
          "lang": "en",
          "value": "SoupAuthManager caches proxy authentication credentials without scoping them to the proxy authority (host:port). When the proxy configuration changes (e.g., via system settings or WPAD), cached Proxy-Authorization headers from the previous proxy are sent to the new proxy, leaking credentials."
        }
      ],
      "metrics": [
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          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Low"
            },
            "type": "Red Hat severity rating"
          }
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.4,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:N/A:N",
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      "providerMetadata": {
        "dateUpdated": "2026-07-21T19:14:49.960Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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          "tags": [
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            "x_refsource_REDHAT"
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          "time": "2026-04-25T00:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Libsoup: information disclosure in libsoup via soupauthmanager proxy credential leak on proxy switch",
      "workarounds": [
        {
          "lang": "en",
          "value": "If changing desktop proxy settings, close any applications using libsoup, then restart the application after the setting has been changed."
        }
      ],
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        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-201: Insertion of Sensitive Information Into Sent Data"
    }
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    "assignerShortName": "redhat",
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    "datePublished": "2026-07-21T18:35:53.214Z",
    "dateReserved": "2026-06-17T18:09:30.319Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.

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GHSA-GMF9-8JMV-V2Q8

CVE-2026-12547 (GCVE-0-2026-12547)

Tags

Sightings

Nomenclature