{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101280 exists.","fix":"No fix has been published for CVE-2026-101280 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-101280 is a medium-severity authentication bypass vulnerability in Trusted Domain Project OpenDMARC, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-101280 and fix it if it is affected.\n\nWhat it is: CVE-2026-101280 is a medium-severity authentication bypass vulnerability in Trusted Domain Project OpenDMARC, published on 29 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101280 exists.\n\nAffected product: Trusted Domain Project OpenDMARC. 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-2026-101280/ (Markdown: https://insights.sbomify.com/CVE-2026-101280/index.md)","id":"CVE-2026-101280","markdown":"https://insights.sbomify.com/CVE-2026-101280/index.md","name":"CVE-2026-101280","record":{"aliases":["DEBIAN-CVE-2026-101280","GHSA-fwhq-23fv-8x97","UBUNTU-CVE-2026-101280"],"analysis":{"component_type":"server_software","fix_type":"no_fix_stated","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenDMARC mail filter","requires_auth":"none","summary":"Remote attackers can bypass DMARC authentication via spoofing in OpenDMARC, allowing unauthorized email validation.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"},{"id":"CWE-287","name":"Improper Authentication"}],"description":"A vulnerability was detected in Trusted Domain Project OpenDMARC up to 1.4.2. Affected is the function opendmarc_policy_query_dmarc of the component Multi-Record Set Handler. The manipulation results in authentication bypass by spoofing. The attack can be executed remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","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":"Trusted Domain Project OpenDMARC Multi-Record Set opendmarc_policy_query_dmarc authentication spoofing","id":"CVE-2026-101280","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"Trusted Domain Project OpenDMARC SPF Macro opendmarc_spf.c opendmarc_sp2_find_mailfrom_domain improper authentication","id":"CVE-2026-101281"},"packages":[],"prev":{"headline":"Trusted Domain Project OpenDMARC opendmarc_policy.c integer overflow","id":"CVE-2026-101279"},"products":["OpenDMARC"],"published":"2026-09-29","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":"2026-09-29","vendors":["Trusted Domain Project"]},"summary":"Remote attackers can bypass DMARC authentication via spoofing in OpenDMARC, allowing unauthorized email validation.","url":"https://insights.sbomify.com/CVE-2026-101280/"}