Vulnerability-Lookup

CNVD-2026-26110

Vulnerability from cnvd - Published: 2026-07-02

Title

Mozilla Firefox for iOS输入验证错误漏洞（CNVD-2026-26110）

Description

Mozilla Firefox for iOS是Mozilla基金会的移动端网页浏览器。 Mozilla Firefox for存在输入验证错误漏洞，该漏洞源于附加cookie到PDF请求时使用部分域匹配，攻击者可利用该漏洞导致后缀域中的恶意站点接收目标站点的cookie。

Severity

中

Patch Name

Mozilla Firefox for iOS输入验证错误漏洞（CNVD-2026-26110）的补丁

Patch Description

Mozilla Firefox for iOS是Mozilla基金会的移动端网页浏览器。 Mozilla Firefox for存在输入验证错误漏洞，该漏洞源于附加cookie到PDF请求时使用部分域匹配，攻击者可利用该漏洞导致后缀域中的恶意站点接收目标站点的cookie。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://bugzilla.mozilla.org/show_bug.cgi?id=2042909

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=2042909

Impacted products

Name
['Mozilla Firefox for iOS', 'Mozilla Firefox for iOS <152.0']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-53899",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-53899"
    }
  },
  "description": "Mozilla Firefox for iOS\u662fMozilla\u57fa\u91d1\u4f1a\u7684\u79fb\u52a8\u7aef\u7f51\u9875\u6d4f\u89c8\u5668\u3002\n\nMozilla Firefox for\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u9644\u52a0cookie\u5230PDF\u8bf7\u6c42\u65f6\u4f7f\u7528\u90e8\u5206\u57df\u5339\u914d\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u540e\u7f00\u57df\u4e2d\u7684\u6076\u610f\u7ad9\u70b9\u63a5\u6536\u76ee\u6807\u7ad9\u70b9\u7684cookie\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=2042909",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-26110",
  "openTime": "2026-07-02",
  "patchDescription": "Mozilla Firefox for iOS\u662fMozilla\u57fa\u91d1\u4f1a\u7684\u79fb\u52a8\u7aef\u7f51\u9875\u6d4f\u89c8\u5668\u3002\r\n\r\nMozilla Firefox for\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u9644\u52a0cookie\u5230PDF\u8bf7\u6c42\u65f6\u4f7f\u7528\u90e8\u5206\u57df\u5339\u914d\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u540e\u7f00\u57df\u4e2d\u7684\u6076\u610f\u7ad9\u70b9\u63a5\u6536\u76ee\u6807\u7ad9\u70b9\u7684cookie\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Mozilla Firefox for iOS\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2026-26110\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Mozilla Firefox for iOS",
      "Mozilla Firefox for iOS \u003c152.0"
    ]
  },
  "referenceLink": "https://bugzilla.mozilla.org/show_bug.cgi?id=2042909",
  "serverity": "\u4e2d",
  "submitTime": "2026-06-22",
  "title": "Mozilla Firefox for iOS\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff08CNVD-2026-26110\uff09"
}

CVE-2026-53899 (GCVE-0-2026-53899)

Vulnerability from cvelistv5 – Published: 2026-06-16 11:53 – Updated: 2026-06-16 15:44

Title

Cross-origin cookies could be leaked when opening a PDF link

Summary

Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 15:44 UTC

CWE

CWE-345 - Insufficient Verification of Data Authenticity

Assigner

mozilla mitre root

References

2 references

URL	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=2042909
https://www.mozilla.org/security/advisories/mfsa2…

Impacted products

1 product

Vendor	Product	Version
Mozilla	Firefox for iOS	Unaffected: 152.0 , ≤ * (rpm)

Credits

Muneaki Nishimura

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-53899",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-16T15:44:07.462912Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-345",
                "description": "CWE-345 Insufficient Verification of Data Authenticity",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-16T15:44:21.570Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox for iOS",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "152.0",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Muneaki Nishimura"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0."
            }
          ],
          "value": "Firefox for iOS used partial domain matching when attaching cookies to PDF requests, allowing a malicious site on a suffix domain to receive cookies belonging to the target site. This vulnerability was fixed in Firefox for iOS 152.0."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-16T11:53:04.805Z",
        "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
        "shortName": "mozilla"
      },
      "references": [
        {
          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2042909"
        },
        {
          "url": "https://www.mozilla.org/security/advisories/mfsa2026-56/"
        }
      ],
      "title": "Cross-origin cookies could be leaked when opening a PDF link"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe",
    "assignerShortName": "mozilla",
    "cveId": "CVE-2026-53899",
    "datePublished": "2026-06-16T11:53:04.805Z",
    "dateReserved": "2026-06-11T06:20:46.257Z",
    "dateUpdated": "2026-06-16T15:44:21.570Z",
    "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.

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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CNVD-2026-26110

CVE-2026-53899 (GCVE-0-2026-53899)

Tags

Sightings

Nomenclature

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