{"answers":{"affected":"3 open source packages ship an affected version, including github.com/dvsekhvalnov/jose2go. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-63811 exists.","fix":"Upgrade github.com/dvsekhvalnov/jose2go to 1.7.0 or later.","what":"CVE-2025-63811 is a high-severity denial of service vulnerability in n/a, published on 12 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-63811 and fix it if it is affected.\n\nWhat it is: CVE-2025-63811 is a high-severity denial of service vulnerability in n/a, published on 12 Nov 2025. 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-2025-63811 exists.\n\nAffected packages and fixed versions:\n- github.com/dvsekhvalnov/jose2go (Go): affected all versions; fixed in 1.7.0\n- github.com/dvsekhvalnov/jose2go (Go): affected all versions; fixed in 1.7.0\n- github.com/dvsekhvalnov/jose2go (Go): affected all versions; fixed in 1.7.0\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-2025-63811/ (Markdown: https://insights.sbomify.com/CVE-2025-63811/index.md)","id":"CVE-2025-63811","markdown":"https://insights.sbomify.com/CVE-2025-63811/index.md","name":"CVE-2025-63811","record":{"aliases":["CLEANSTART-2026-TQ82043","DEBIAN-CVE-2025-63811","GHSA-9mj6-hxhv-w67j","GO-2025-4123","MINI-25jm-p522-2j6c","MINI-8g87-g6cg-gcp9","MINI-cr28-f2fq-g5rm","MINI-fmp4-h377-96r5","MINI-g6m5-q3xx-xc38","MINI-mx8p-823q-8rmg","MINI-p9c7-p4xh-r9vm","MINI-q5fh-6hj2-7gq8","MINI-r72j-m978-rcq4","MINI-vrhr-63p3-pw2q","MINI-x2gf-xhqm-fqmc","UBUNTU-CVE-2025-63811"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Go JWE library","requires_auth":"none","summary":"An attacker can cause a Denial-of-Service in the jose2go library by sending a crafted JWE token with a high compression ratio.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"jose2go","vendor":"dvsekhvalnov"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"An issue was discovered in dvsekhvalnov jose2go 1.5.0 thru 1.7.0 allowing an attacker to cause a Denial-of-Service (DoS) via crafted JSON Web Encryption (JWE) token with an exceptionally high compression ratio.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"jose2go is vulnerable to a JWT bomb attack through its decode function","id":"CVE-2025-63811","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":3,"n_references":1,"next":{"headline":"Missing authorization in n/a","id":"CVE-2025-63822"},"packages":[{"ecosystem":"Go","fixed":["1.7.0"],"introduced":["0"],"last_affected":[],"package":"github.com/dvsekhvalnov/jose2go","purl":null,"source":"GHSA-9mj6-hxhv-w67j"},{"ecosystem":"Go","fixed":["1.7.0"],"introduced":["0"],"last_affected":[],"package":"github.com/dvsekhvalnov/jose2go","purl":"pkg:golang/github.com/dvsekhvalnov/jose2go","source":"GHSA-9mj6-hxhv-w67j"},{"ecosystem":"Go","fixed":["1.7.0"],"introduced":["0"],"last_affected":[],"package":"github.com/dvsekhvalnov/jose2go","purl":"pkg:golang/github.com/dvsekhvalnov/jose2go","source":"GO-2025-4123"}],"prev":{"headline":"Auth bypass in n/a","id":"CVE-2025-63807"},"products":["n/a"],"published":"2025-11-12","related":[{"cvss_score":7.5,"headline":"jose2go vulnerable to denial of service via large p2c value","id":"CVE-2023-50658","kev_date_added":null,"published":"2023-12-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-13","vendors":["n/a"]},"summary":"An attacker can cause a Denial-of-Service in the jose2go library by sending a crafted JWE token with a high compression ratio.","url":"https://insights.sbomify.com/CVE-2025-63811/"}