{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53900 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-53900 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-53900 is a medium-severity vulnerability in Mozilla Firefox Mobile, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-53900 and fix it if it is affected.\n\nWhat it is: CVE-2026-53900 is a medium-severity vulnerability in Mozilla Firefox Mobile, published on 16 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-53900 in the wild and no public exploit code.\n\nAffected product: Mozilla Firefox Mobile. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-53900/ (Markdown: https://insights.sbomify.com/CVE-2026-53900/index.md)","id":"CVE-2026-53900","markdown":"https://insights.sbomify.com/CVE-2026-53900/index.md","name":"CVE-2026-53900","record":{"aliases":["GHSA-6xv8-mg86-mq56"],"analysis":{"component_type":"mobile_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Firefox for iOS","requires_auth":"none","summary":"A malicious site could inject arbitrary cookies into requests to unrelated domains via PDF links in Firefox for iOS, bypassing security controls.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mozilla","cpe":[{"product":"firefox_mobile","vendor":"mozilla"}],"cvss":{"score":4.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-384","name":"Session Fixation"},{"id":"CWE-345","name":"Insufficient Verification of Data Authenticity"}],"description":"Firefox for iOS preserved cookies set on the initial PDF request across cross-origin HTTP redirects in TemporaryDocument, allowing a malicious site to inject arbitrary cookies into requests to an unrelated target domain. This vulnerability was fixed in Firefox for iOS 152.0.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Cookie injection was possible when opening a PDF link","id":"CVE-2026-53900","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"mozilla:firefox_mobile","products":["mozilla:firefox_mobile"],"type":"other","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Cerebrate before v1.37 allows mass assignment of record identifiers during object creation","id":"CVE-2026-53901"},"packages":[],"prev":{"headline":"Cross-origin cookies could be leaked when opening a PDF link","id":"CVE-2026-53899"},"products":["Firefox for iOS"],"published":"2026-06-16","related":[{"cvss_score":9.8,"headline":"Other issue in Firefox Focus for Android","id":"CVE-2026-84135","kev_date_added":null,"published":"2026-09-01"},{"cvss_score":9.8,"headline":"Cross-site scripting in Firefox for iOS","id":"CVE-2024-43111","kev_date_added":null,"published":"2024-08-06"},{"cvss_score":9.8,"headline":"Information disclosure in Firefox for iOS","id":"CVE-2023-49060","kev_date_added":null,"published":"2023-11-21"},{"cvss_score":8.8,"headline":"Privilege escalation in Firefox for Android","id":"CVE-2026-92033","kev_date_added":null,"published":"2026-09-15"},{"cvss_score":8.8,"headline":"Privilege escalation in Firefox for Android","id":"CVE-2026-84117","kev_date_added":null,"published":"2026-09-01"},{"cvss_score":8.1,"headline":"Other in Firefox","id":"CVE-2021-29993","kev_date_added":null,"published":"2021-11-03"},{"cvss_score":7.5,"headline":"Information disclosure in the Privacy component in Firefox for Android","id":"CVE-2026-16373","kev_date_added":null,"published":"2026-07-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-06-16","vendors":["Mozilla"]},"summary":"A malicious site could inject arbitrary cookies into requests to unrelated domains via PDF links in Firefox for iOS, bypassing security controls.","url":"https://insights.sbomify.com/CVE-2026-53900/"}