Vulnerability-Lookup

GHSA-M2JV-HF34-6G5M

Vulnerability from github – Published: 2026-06-16 15:33 – Updated: 2026-06-16 18:32

Details

Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.

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  "affected": [],
  "aliases": [
    "CVE-2026-12307"
  ],
  "database_specific": {
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    "nvd_published_at": "2026-06-16T13:16:30Z",
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  "details": "Memory safety bug fixed in Firefox 152. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.",
  "id": "GHSA-m2jv-hf34-6g5m",
  "modified": "2026-06-16T18:32:36Z",
  "published": "2026-06-16T15:33:49Z",
  "references": [
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      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12307"
    },
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      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2038133"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-57"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-58"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-60"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2026-61"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-12307 (GCVE-0-2026-12307)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:52 – Updated: 2026-06-16 17:37

Title

Memory safety bug fixed in Thunderbird 152

Summary

Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

mozilla

References

5 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2038133
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

2 products

Vendor	Product	Version
Mozilla	Firefox	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)
Mozilla	Thunderbird	Unaffected: 140.12 , ≤ 140.* (rpm) Unaffected: 152 , ≤ * (rpm)

Credits

Atsushi Sada

Show details on NVD website

JSON

To clipboard

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    "adp": [
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        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
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                "id": "CVE-2026-12307",
                "options": [
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                    "Technical Impact": "partial"
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                "timestamp": "2026-06-16T17:36:38.442081Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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    "cna": {
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          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
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              "lessThanOrEqual": "140.*",
              "status": "unaffected",
              "version": "140.12",
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      "providerMetadata": {
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  "cveMetadata": {
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    "datePublished": "2026-06-16T11:52:40.757Z",
    "dateReserved": "2026-06-15T15:08:13.454Z",
    "dateUpdated": "2026-06-16T17:37:15.705Z",
    "state": "PUBLISHED"
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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.

Action not permitted

GHSA-M2JV-HF34-6G5M

CVE-2026-12307 (GCVE-0-2026-12307)

Tags

Sightings

Nomenclature