{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-125756 in the wild and no public exploit code.","exposure":"","fix":"No fix has been published for CVE-2026-125756 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-125756 is a high-severity vulnerability in postalsys postal-mime, published on 10 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-125756 and fix it if it is affected.\n\nWhat it is: CVE-2026-125756 is a high-severity vulnerability in postalsys postal-mime, published on 10 Nov 2026. \nExploitation: There is no known exploitation of CVE-2026-125756 in the wild and no public exploit code.\n\nAffected product: postalsys postal-mime. 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-2026-125756/ (Markdown: https://insights.sbomify.com/CVE-2026-125756/index.md)","id":"CVE-2026-125756","markdown":"https://insights.sbomify.com/CVE-2026-125756/index.md","name":"CVE-2026-125756","record":{"aliases":["GHSA-jh3p-792r-98gm","GHSA-vpww-qpqr-cgcc"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-436","name":"Interpretation Conflict"}],"description":"postal-mime before 4.2.1 contains a parser differential vulnerability in its address parser that truncates the domain at folding whitespace or comments preceding a dot. Remote attackers can craft From headers that pass SPF/DKIM/DMARC alignment for their own subdomain while PostalMime.parse() reports a spoofed victim sender address.","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":"postal-mime before 4.2.1 Sender Spoofing via Address Parser Domain Truncation","id":"CVE-2026-125756","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"mailcow: dockerized before 2026-11 Template Injection RCE via Domain-Wide Footer","id":"CVE-2026-125757"},"nickname":null,"packages":[],"prev":{"headline":"Nodemailer 3.0.0 before 10.4.1 Recipient Allow-List Bypass via addressparser","id":"CVE-2026-125755"},"products":["postal-mime"],"published":"2026-11-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-11-10","vendors":["postalsys"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-125756/"}