{"answers":{"affected":"3 open source packages ship an affected version, including cryptography.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-69249 exists.","fix":"Upgrade cryptography to 49.0.0 or later.","what":"CVE-2026-69249 is a high-severity denial of service vulnerability in pyca cryptography, published on 3 Aug 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-2026-69249 and fix it if it is affected.\n\nWhat it is: CVE-2026-69249 is a high-severity denial of service vulnerability in pyca cryptography, published on 3 Aug 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-2026-69249 exists.\n\nAffected packages and fixed versions:\n- cryptography (PyPI): affected all versions; fixed in 49.0.0\n- cryptography (PyPI): affected from 42.0.0; fixed in 49.0.0\n- cryptography (PyPI): affected from 42.0.0; fixed in 49.0.0\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-2026-69249/ (Markdown: https://insights.sbomify.com/CVE-2026-69249/index.md)","id":"CVE-2026-69249","markdown":"https://insights.sbomify.com/CVE-2026-69249/index.md","name":"CVE-2026-69249","record":{"aliases":["ALSA-2026:71658","AZL-94584","CLEANSTART-2026-TX79542","CLEANSTART-2026-WP84262","CLSA-2026-1789377631","CLSA-2026-1789377744","CLSA-2026-1789379340","CLSA-2026-1789552762","DEBIAN-CVE-2026-69249","ECHO-1b10-505e-409c","GHSA-jwv3-5hgf-82ww","MINI-256f-mgv5-qcg9","MINI-276v-jww6-hfgw","MINI-2gp4-rxqc-7vrc","MINI-2jq2-6285-jfpm","MINI-2r45-733c-mjjr","MINI-545v-jj7f-cx6w","MINI-5h55-q8c4-8fhp","MINI-5vmq-rhcg-j9vh","MINI-5wrj-qw6x-x7m3","MINI-6mhw-r5mq-vcr7","MINI-73cq-5949-4723","MINI-7g75-q9mj-hhw7","MINI-8wf2-99g3-4cjh","MINI-8wq7-9xv7-jw8c","MINI-9q5j-f8xw-m68v","MINI-9x38-6hxv-fqh9","MINI-cjgq-jfq7-m873","MINI-f377-f724-55hx","MINI-fv5x-48hp-6jq4","MINI-g8px-jjh5-r6j4","MINI-gf86-j4h2-77w5","MINI-m297-9q99-525p","MINI-mcw6-5w96-4wxj","MINI-p425-4c93-r82h","MINI-p5rj-gv9h-v75g","MINI-pcm4-rw83-pcmv","MINI-pvwg-v88r-h88j","MINI-rcpv-g37w-qw79","MINI-rmw9-qfjg-924m","MINI-rp42-vvfq-hf6r","MINI-v58w-vmp9-x23h","MINI-vf76-xfhq-94r3","MINI-w67h-whqw-fp92","MINI-w8jg-4779-5rf4","MINI-w9v9-5hp4-5g9j","MINI-x47q-mr89-37rm","MINI-xp5v-4w4q-8pmg","OESA-2026-3457","OESA-2026-3458","OESA-2026-3459","PYSEC-2026-3553","RHSA-2026:71658","RHSA-2026:71659","RLSA-2026:71658","ROOT-APP-PYPI-CVE-2026-69249","UBUNTU-CVE-2026-69249"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python cryptography library","requires_auth":"none","summary":"An attacker can cause resource exhaustion and denial of service by submitting certificate chains with duplicate self-signed intermediates to the Python cryptography library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"python-cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In versions 42.0.0 through 48.0.0, when resolving invalid certificate chains that include duplicate copies of self-signed certificates, the processing recursively invokes the same candidate, leading to an exponential blowup. Although the limitation that the chain depth cannot exceed a specified maximum depth prevents unbounded recursion and guarantees termination, an attacker-controlled certificate chain can lead the processing to easily take more than 5s to reject in testing. This amplification could form the basis for a resource exhaustion denial of service attack. The core issue arises in the recursive nature of build_chain_inner, which does not de-duplicate against previously analyzed candidates. As the correctness of validation is not affected, the integrity of a system cannot be compromised through this vector, only its availability. This issue is fixed in 49.0.0.","ecosystems":["AlmaLinux:10","PyPI","Red Hat:enterprise_linux:10.2","Red Hat:enterprise_linux_eus:10.0","Rocky Linux:10"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"python-cryptography: Duplicate self-signed intermediates can cause exponential path-building","id":"CVE-2026-69249","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":13,"n_references":5,"next":{"headline":"Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration","id":"CVE-2026-69250"},"packages":[{"ecosystem":"PyPI","fixed":["49.0.0"],"introduced":["0"],"last_affected":[],"package":"cryptography","purl":"pkg:pypi/cryptography","source":"PYSEC-2026-3553"},{"ecosystem":"PyPI","fixed":["49.0.0"],"introduced":["42.0.0"],"last_affected":[],"package":"cryptography","purl":null,"source":"GHSA-jwv3-5hgf-82ww"},{"ecosystem":"PyPI","fixed":["49.0.0"],"introduced":["42.0.0"],"last_affected":[],"package":"cryptography","purl":"pkg:pypi/cryptography","source":"GHSA-jwv3-5hgf-82ww"},{"ecosystem":"AlmaLinux:10","fixed":["43.0.0-4.el10_2.5"],"introduced":["0"],"last_affected":[],"package":"python3-cryptography","purl":"pkg:rpm/almalinux/python3-cryptography","source":"ALSA-2026:71658"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:43.0.0-4.el10_2.5"],"introduced":["0"],"last_affected":[],"package":"python-cryptography","purl":"pkg:rpm/redhat/python-cryptography","source":"RHSA-2026:71658"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:43.0.0-4.el10_2.5"],"introduced":["0"],"last_affected":[],"package":"python-cryptography-debugsource","purl":"pkg:rpm/redhat/python-cryptography-debugsource","source":"RHSA-2026:71658"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:43.0.0-4.el10_2.5"],"introduced":["0"],"last_affected":[],"package":"python3-cryptography","purl":"pkg:rpm/redhat/python3-cryptography","source":"RHSA-2026:71658"},{"ecosystem":"Red Hat:enterprise_linux:10.2","fixed":["0:43.0.0-4.el10_2.5"],"introduced":["0"],"last_affected":[],"package":"python3-cryptography-debuginfo","purl":"pkg:rpm/redhat/python3-cryptography-debuginfo","source":"RHSA-2026:71658"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:43.0.0-4.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"python-cryptography","purl":"pkg:rpm/redhat/python-cryptography","source":"RHSA-2026:71659"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:43.0.0-4.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"python-cryptography-debugsource","purl":"pkg:rpm/redhat/python-cryptography-debugsource","source":"RHSA-2026:71659"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:43.0.0-4.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"python3-cryptography","purl":"pkg:rpm/redhat/python3-cryptography","source":"RHSA-2026:71659"},{"ecosystem":"Red Hat:enterprise_linux_eus:10.0","fixed":["0:43.0.0-4.el10_0.1"],"introduced":["0"],"last_affected":[],"package":"python3-cryptography-debuginfo","purl":"pkg:rpm/redhat/python3-cryptography-debuginfo","source":"RHSA-2026:71659"},{"ecosystem":"Rocky Linux:10","fixed":["0:43.0.0-4.el10_2.5"],"introduced":["0"],"last_affected":[],"package":"python-cryptography","purl":"pkg:rpm/rocky-linux/python-cryptography?distro=rocky-linux-10\u0026epoch=0","source":"RLSA-2026:71658"}],"prev":{"headline":"python-cryptography verifier accepts wildcard DNS names allowing escape from permittedSubtrees","id":"CVE-2026-69248"},"products":["cryptography"],"published":"2026-08-03","related":[],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"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":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"class":"attribution","licence":"BSD","name":"Rocky Linux","prefix":"RLSA"},{"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":"2026-09-04","vendors":["pyca"]},"summary":"An attacker can cause resource exhaustion and denial of service by submitting certificate chains with duplicate self-signed intermediates to the Python cryptography library.","url":"https://insights.sbomify.com/CVE-2026-69249/"}