Vulnerability-Lookup

OESA-2026-4406 (CVE-2026-96442)

Vulnerability from osv_openeuler – Published: 2026-10-16 12:00 – Updated: 2026-10-16 12:00 – Source website

Summary

emacs security update

Details

Emacs is the extensible, customizable, self-documenting real-time display editor. At its core is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. And it is an entire ecosystem of functionality beyond text editing, including a project planner, mail and news reader, debugger interface, calendar, and more.

Security Fix(es):

A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.(CVE-2026-96442)

Severity

7.8 (High)


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

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-96442	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "emacs-27.2-20.oe2203sp4.aarch64.rpm",
          "emacs-common-27.2-20.oe2203sp4.aarch64.rpm",
          "emacs-debuginfo-27.2-20.oe2203sp4.aarch64.rpm",
          "emacs-debugsource-27.2-20.oe2203sp4.aarch64.rpm",
          "emacs-devel-27.2-20.oe2203sp4.aarch64.rpm",
          "emacs-lucid-27.2-20.oe2203sp4.aarch64.rpm",
          "emacs-nox-27.2-20.oe2203sp4.aarch64.rpm"
        ],
        "noarch": [
          "emacs-filesystem-27.2-20.oe2203sp4.noarch.rpm",
          "emacs-help-27.2-20.oe2203sp4.noarch.rpm",
          "emacs-terminal-27.2-20.oe2203sp4.noarch.rpm"
        ],
        "src": [
          "emacs-27.2-20.oe2203sp4.src.rpm"
        ],
        "x86_64": [
          "emacs-27.2-20.oe2203sp4.x86_64.rpm",
          "emacs-common-27.2-20.oe2203sp4.x86_64.rpm",
          "emacs-debuginfo-27.2-20.oe2203sp4.x86_64.rpm",
          "emacs-debugsource-27.2-20.oe2203sp4.x86_64.rpm",
          "emacs-devel-27.2-20.oe2203sp4.x86_64.rpm",
          "emacs-lucid-27.2-20.oe2203sp4.x86_64.rpm",
          "emacs-nox-27.2-20.oe2203sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP4",
        "name": "emacs",
        "purl": "pkg:rpm/openEuler/emacs\u0026distro=openEuler-22.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "27.2-20.oe2203sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Emacs is the extensible, customizable, self-documenting real-time display editor. At its core is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. And it is an entire ecosystem of functionality beyond text editing, including a project planner, mail and news reader, debugger interface, calendar, and more.\r\n\r\nSecurity Fix(es):\n\nA code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.(CVE-2026-96442)",
  "id": "OESA-2026-4406",
  "modified": "2026-10-16T12:00:15Z",
  "published": "2026-10-16T12:00:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4406"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-96442"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "emacs security update",
  "upstream": [
    "CVE-2026-96442"
  ]
}

CVE-2026-96442 (GCVE-0-2026-96442)

Vulnerability from cvelistv5 – Published: 2026-09-23 10:10 – Updated: 2026-09-24 20:00

Title

Emacs: emacs: arbitrary code execution in flymake mode

Summary

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-23 13:54 UTC

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1036 records in the last 180 days details

References

5 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-96442	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2537347	issue-trackingx_refsource_REDHAT
https://github.com/emacs-mirror/emacs/commit/135e…
https://github.com/emacs-mirror/emacs/commit/abc8…
https://www.openwall.com/lists/oss-security/2026/…

Impacted products

6 products

Vendor	Product	Version
GNU Emacs	GNU Emacs	Affected: 0 , < 31.2 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-09-14 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-96442",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-23T13:54:08.909184Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
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    "cna": {
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          "collectionURL": "https://git.savannah.gnu.org/cgit/emacs.git/",
          "defaultStatus": "unaffected",
          "packageName": "emacs",
          "product": "GNU Emacs",
          "vendor": "GNU Emacs",
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              "versionType": "semver"
            }
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          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ],
          "defaultStatus": "affected",
          "packageName": "emacs",
          "product": "Red Hat Enterprise Linux 10",
          "vendor": "Red Hat"
        },
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          "cpes": [
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          ],
          "defaultStatus": "unknown",
          "packageName": "emacs",
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          "vendor": "Red Hat"
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          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
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        }
      ],
      "metrics": [
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          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
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            },
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            "attackVector": "LOCAL",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
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            "version": "3.1"
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      "references": [
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          "name": "RHBZ#2537347",
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          "url": "https://github.com/emacs-mirror/emacs/commit/135e6f63f08fee3d374fa1a5187bce941a2d3e3c"
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          "url": "https://github.com/emacs-mirror/emacs/commit/abc802ee2eb0b1663349ddf22a461f8e54a383fb"
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          "time": "2026-09-14T00:00:00.000Z",
          "value": "Made public."
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      ],
      "title": "Emacs: emacs: arbitrary code execution in flymake mode",
      "workarounds": [
        {
          "lang": "en",
          "value": "To mitigate this issue, users should avoid opening or editing untrusted text files with Emacs. Exercise caution when handling files from unknown or suspicious sources, as interacting with them can lead to arbitrary code execution."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)"
    }
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  "cveMetadata": {
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    "datePublished": "2026-09-23T10:10:36.734Z",
    "dateReserved": "2026-09-23T08:58:32.822Z",
    "dateUpdated": "2026-09-24T20:00:40.075Z",
    "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.

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