Vulnerability-Lookup

ALSA-2026:84584

Vulnerability from osv_almalinux – Published: 2026-10-19 00:00 – Updated: 2026-10-19 09:23 – Source website

Summary

Critical: webkit2gtk3 security, bug fix, and enhancement update

Details

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

Security Fix(es):

chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via out-of-bounds read (CVE-2026-87596)
chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via crafted HTML page (CVE-2026-87500)
chromium-browser: angle: Chromium: Arbitrary code execution via buffer overflow in ANGLE (CVE-2026-87654)
chromium-browser: angle: Google Chrome (ANGLE): Arbitrary Code Execution vulnerability (CVE-2026-87621)
chromium-browser: angle: Chromium-browser: Arbitrary code execution via use-after-free vulnerability in ANGLE (CVE-2026-87512)
chromium-browser: angle: ANGLE: Arbitrary code execution in Google Chrome due to use-after-free (CVE-2026-87648)
chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page (CVE-2026-87602)
chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page (CVE-2026-87586)
chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via out-of-bounds read (CVE-2026-87604)
chromium-browser: angle: chromium-browser: Improper input validation in ANGLE (CVE-2026-91738)
chromium-browser: angle: chromium-browser: Uninitialized resource in ANGLE (CVE-2026-91720)

Bug Fix(es) and Enhancement(s):

webkit2gtk3 2.54.0 regression breaks Eclipse IDE WebKit-based views on CentOS Stream 9 [almalinux-8.10.z] (JIRA:AlmaLinux-274406)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:84584	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-87500	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87512	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87586	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87596	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87602	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87604	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87621	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87648	REPORT
	https://access.redhat.com/security/cve/CVE-2026-87654	REPORT
	https://access.redhat.com/security/cve/CVE-2026-91720	REPORT
	https://access.redhat.com/security/cve/CVE-2026-91738	REPORT
	https://bugzilla.redhat.com/2530272	REPORT
	https://bugzilla.redhat.com/2530296	REPORT
	https://bugzilla.redhat.com/2530305	REPORT
	https://bugzilla.redhat.com/2530333	REPORT
	https://bugzilla.redhat.com/2530389	REPORT
	https://bugzilla.redhat.com/2530396	REPORT
	https://bugzilla.redhat.com/2530447	REPORT
	https://bugzilla.redhat.com/2530458	REPORT
	https://bugzilla.redhat.com/2530475	REPORT
	https://bugzilla.redhat.com/2534404	REPORT
	https://bugzilla.redhat.com/2534673	REPORT
	https://errata.almalinux.org/8/ALSA-2026-84584.html	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "webkit2gtk3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.54.1-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "webkit2gtk3-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.54.1-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "webkit2gtk3-jsc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.54.1-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:8",
        "name": "webkit2gtk3-jsc-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.54.1-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.  \n\nSecurity Fix(es):  \n\n  * chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via out-of-bounds read (CVE-2026-87596)\n  * chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via crafted HTML page (CVE-2026-87500)\n  * chromium-browser: angle: Chromium: Arbitrary code execution via buffer overflow in ANGLE (CVE-2026-87654)\n  * chromium-browser: angle: Google Chrome (ANGLE): Arbitrary Code Execution vulnerability (CVE-2026-87621)\n  * chromium-browser: angle: Chromium-browser: Arbitrary code execution via use-after-free vulnerability in ANGLE (CVE-2026-87512)\n  * chromium-browser: angle: ANGLE: Arbitrary code execution in Google Chrome due to use-after-free (CVE-2026-87648)\n  * chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page (CVE-2026-87602)\n  * chromium-browser: angle: ANGLE in Google Chrome: Information disclosure via crafted HTML page (CVE-2026-87586)\n  * chromium-browser: angle: ANGLE in Google Chrome: Arbitrary code execution via out-of-bounds read (CVE-2026-87604)\n  * chromium-browser: angle: chromium-browser: Improper input validation in ANGLE (CVE-2026-91738)\n  * chromium-browser: angle: chromium-browser: Uninitialized resource in ANGLE (CVE-2026-91720)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * webkit2gtk3 2.54.0 regression breaks Eclipse IDE WebKit-based views on CentOS Stream 9 [almalinux-8.10.z] (JIRA:AlmaLinux-274406)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n",
  "id": "ALSA-2026:84584",
  "modified": "2026-10-19T09:23:32Z",
  "published": "2026-10-19T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:84584"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87500"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87512"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87586"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87596"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87602"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87604"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87621"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87648"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-87654"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-91720"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-91738"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530272"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530296"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530305"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530333"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530389"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530396"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530447"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530458"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2530475"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2534404"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2534673"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-84584.html"
    }
  ],
  "related": [
    "CVE-2026-87596",
    "CVE-2026-87500",
    "CVE-2026-87654",
    "CVE-2026-87621",
    "CVE-2026-87512",
    "CVE-2026-87648",
    "CVE-2026-87602",
    "CVE-2026-87586",
    "CVE-2026-87604",
    "CVE-2026-91738",
    "CVE-2026-91720"
  ],
  "summary": "Critical: webkit2gtk3 security, bug fix, and enhancement update"
}

CVE-2026-91738 (GCVE-0-2026-91738)

Vulnerability from cvelistv5 – Published: 2026-09-15 20:41 – Updated: 2026-09-17 03:56

Summary

Improper input validation in ANGLE in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Severity

9.6 (Critical)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-16 00:00 UTC

CWE

CWE-20 - Improper input validation

Assigner

Chrome CNA under the Google root

CNA scorecard E 43/100 over 3343 records in the last 180 days details

References

2 references

URL	Tags
https://chromereleases.googleblog.com/2026/09/sta…
https://issues.chromium.org/issues/536450979

Impacted products

1 product

Vendor	Product	Version
Google	Chrome	Affected: 153.0.8010.47 , < 153.0.8010.47 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 9.6,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-91738",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-16T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-17T03:56:22.018Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Chrome",
          "vendor": "Google",
          "versions": [
            {
              "lessThan": "153.0.8010.47",
              "status": "affected",
              "version": "153.0.8010.47",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Improper input validation in ANGLE in Google Chrome prior to 153.0.8010.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "Improper input validation",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-15T20:41:35.801Z",
        "orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28",
        "shortName": "Chrome"
      },
      "references": [
        {
          "url": "https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0541751186.html"
        },
        {
          "url": "https://issues.chromium.org/issues/536450979"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28",
    "assignerShortName": "Chrome",
    "cveId": "CVE-2026-91738",
    "datePublished": "2026-09-15T20:41:35.801Z",
    "dateReserved": "2026-09-14T22:52:43.103Z",
    "dateUpdated": "2026-09-17T03:56:22.018Z",
    "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.

Vulnerability timeline

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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.

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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