webkit2gtk3: Fix of 4 CVEs

{
  "id": "52140b49312e46ba8c4e937c6f5965d0aa15de0360b907b2e95e069504440357",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1779956120",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "webkit2gtk3: Fix of 4 CVEs",
    "summary": "- CVE-2026-20643: fix Navigation API cross-subdomain intercept (WebKit bug 306050) - CVE-2026-20665: fix CSP bypass in sandboxed srcdoc iframes (WebKit bug 304951) - CVE-2026-20691: fix WebContent process starting local file loads it cannot access (WebKit bug 306827) - CVE-2026-28871: fix content served as video/mp2t being loaded as HTML (WebKit bug 305859)",
    "evidence": "osv:CLSA-2026-1779956120",
    "products": [
      {
        "name": {
          "value": "webkit2gtk3",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.50.6-1.el9_6.tuxcare.els2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "webkit2gtk3-devel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.50.6-1.el9_6.tuxcare.els2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "webkit2gtk3-jsc",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.50.6-1.el9_6.tuxcare.els2",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "webkit2gtk3-jsc-devel",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.50.6-1.el9_6.tuxcare.els2",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1779956120",
      "aliases": [
        "CLSA-2026-1779956120"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.50.6-1.el9_6.tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "webkit2gtk3",
            "purl": "pkg:rpm/tuxcare/webkit2gtk3?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1779956120.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.50.6-1.el9_6.tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "webkit2gtk3-devel",
            "purl": "pkg:rpm/tuxcare/webkit2gtk3-devel?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1779956120.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.50.6-1.el9_6.tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "webkit2gtk3-jsc",
            "purl": "pkg:rpm/tuxcare/webkit2gtk3-jsc?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1779956120.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.50.6-1.el9_6.tuxcare.els2"
                }
              ]
            }
          ],
          "package": {
            "name": "webkit2gtk3-jsc-devel",
            "purl": "pkg:rpm/tuxcare/webkit2gtk3-jsc-devel?distro=almalinux-9.6",
            "ecosystem": "TuxCare:AlmaLinux:9.6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1779956120.json"
          }
        }
      ],
      "modified": "2026-10-26T09:31:05.653470567Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-20643",
        "CVE-2026-20665",
        "CVE-2026-20691",
        "CVE-2026-28871"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1779956120.html"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-20643",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-20665",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-20691",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-28871",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 447433,
  "published_at": "2026-05-28T08:15:24+00:00"
}