github - ghsa-2rfm-q54c-ww9j

GHSA-2RFM-Q54C-WW9J

Vulnerability from github – Published: 2022-05-24 17:35 – Updated: 2022-05-24 17:35

Details

In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-26956"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-09T01:15:00Z",
    "severity": "MODERATE"
  },
  "details": "In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox \u003c 83, Firefox ESR \u003c 78.5, and Thunderbird \u003c 78.5.",
  "id": "GHSA-2rfm-q54c-ww9j",
  "modified": "2022-05-24T17:35:37Z",
  "published": "2022-05-24T17:35:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-26956"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1666300"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2020-50"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2020-51"
    },
    {
      "type": "WEB",
      "url": "https://www.mozilla.org/security/advisories/mfsa2020-52"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2020-26956 (GCVE-0-2020-26956)

Vulnerability from cvelistv5 – Published: 2020-12-09 00:21 – Updated: 2024-08-04 16:03

Summary

Severity ?

No CVSS data available.

CWE

XSS through paste (manual and clipboard API)

Assigner

mozilla

References

URL

Tags

	https://bugzilla.mozilla.org/show_bug.cgi?id=1666300	x_refsource_MISC
	https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_CONFIRM
	https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_CONFIRM
	https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_CONFIRM

Impacted products

Vendor

Product

Version

Mozilla

Firefox

Affected: < 83

	Mozilla	Firefox ESR	Affected: < 78.5
	Mozilla	Thunderbird	Affected: < 78.5

Show details on NVD website

JSON

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          },
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          }
        ],
        "title": "CVE Program Container"
      }
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Sightings

Author	Source	Type	Date

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-2RFM-Q54C-WW9J

CVE-2020-26956 (GCVE-0-2020-26956)

Tags

Sightings

Nomenclature