{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124016 exists.","exposure":"","fix":"No fix has been published for CVE-2026-124016 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-124016 is a medium-severity vulnerability in postalsys postal-mime, published on 10 Nov 2026."},"fix_prompt":"Check this codebase for CVE-2026-124016 and fix it if it is affected.\n\nWhat it is: CVE-2026-124016 is a medium-severity vulnerability in postalsys postal-mime, published on 10 Nov 2026. \nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124016 exists.\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-2026-124016/ (Markdown: https://insights.sbomify.com/CVE-2026-124016/index.md)","id":"CVE-2026-124016","markdown":"https://insights.sbomify.com/CVE-2026-124016/index.md","name":"CVE-2026-124016","record":{"aliases":["GHSA-2h8j-5q45-j7q7","GHSA-q8wm-54mj-r36p"],"analysis":null,"analysis_generated_by":null,"assigner":"VulnCheck","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-407","name":"Inefficient Algorithmic Complexity"}],"description":"postal-mime before 4.2.1 contains an algorithmic complexity denial of service vulnerability that allows unauthenticated remote attackers to cause excessive CPU consumption in the PostalMime.processLine() function by crafting deeply nested multipart email messages with boundary lines sharing long prefixes with open boundaries. Attackers can deliver a malicious email with nesting up to the default maxNestingDepth of 256, causing per-line parsing cost to scale as O(depth x shared prefix length) and blocking the Node.js event loop for seconds per message.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"postal-mime \u003c 4.2.1 Algorithmic Complexity DoS via processLine","id":"CVE-2026-124016","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":null,"year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Gutenverse Form WordPress Plugin \u003c 3.2.2 CSV Formula Injection via Form Submission","id":"CVE-2026-124018"},"nickname":null,"packages":[],"prev":{"headline":"Dixell/Copeland XWEB EVO Authentication Bypass via users.lua","id":"CVE-2026-124015"},"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-11-10","vendors":["postalsys"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-124016/"}