{"answers":{"affected":"It affects 11 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-22890 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2021-22890 is a medium-severity vulnerability in Broadcom Fabric Operating System, published on 1 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2021-22890 and fix it if it is affected.\n\nWhat it is: CVE-2021-22890 is a medium-severity vulnerability in Broadcom Fabric Operating System, published on 1 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-22890 exists.\n\nAffected product: Broadcom Fabric Operating System. 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-2021-22890/ (Markdown: https://insights.sbomify.com/CVE-2021-22890/index.md)","id":"CVE-2021-22890","markdown":"https://insights.sbomify.com/CVE-2021-22890/index.md","name":"CVE-2021-22890","record":{"aliases":["ALPINE-CVE-2021-22890","CLEANSTART-2026-FP47166","CURL-CVE-2021-22890","DEBIAN-CVE-2021-22890","GHSA-5cwr-528x-3vwc","JLSEC-2025-27","UBUNTU-CVE-2021-22890"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"curl library","requires_auth":"none","summary":"A malicious HTTPS proxy can bypass TLS certificate checks in libcurl via session ticket confusion, enabling Man-in-the-Middle attacks.","user_interaction":"required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"hackerone","cpe":[{"product":"fabric_operating_system","vendor":"broadcom"},{"product":"debian_linux","vendor":"debian"},{"product":"fedora","vendor":"fedoraproject"},{"product":"libcurl","vendor":"haxx"},{"product":"hci_management_node","vendor":"netapp"},{"product":"hci_storage_node","vendor":"netapp"},{"product":"solidfire","vendor":"netapp"},{"product":"communications_billing_and_revenue_management","vendor":"oracle"},{"product":"essbase","vendor":"oracle"},{"product":"sinec_infrastructure_network_services","vendor":"siemens"},{"product":"universal_forwarder","vendor":"splunk"}],"cvss":{"score":4.3,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-290","name":"Authentication Bypass by Spoofing"},{"id":"CWE-300","name":"Channel Accessible by Non-Endpoint"}],"description":"curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly \"short-cut\" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Security feature bypass in https://github.com/curl/curl","id":"CVE-2021-22890","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"broadcom:fabric_operating_system","products":["broadcom:fabric_operating_system","debian:debian_linux","fedoraproject:fedora","haxx:libcurl","netapp:hci_management_node","netapp:solidfire","oracle:communications_billing_and_revenue_management","oracle:essbase","siemens:sinec_infrastructure_network_services","splunk:universal_forwarder"],"type":"security_feature_bypass","year":"2021"},"n_packages":0,"n_references":9,"next":{"headline":"Missing authorization in Citrix ShareFile Storage Zones Controller","id":"CVE-2021-22891"},"packages":[],"prev":{"headline":"Cross-site scripting in https://github.com/revive-adserver/revive-adserver","id":"CVE-2021-22889"},"products":["https://github.com/curl/curl"],"published":"2021-04-01","related":[{"cvss_score":8.6,"headline":"Broadcom Brocade Fabric OS Code Injection","id":"CVE-2025-1976","kev_date_added":"2025-04-28","published":"2025-04-24"},{"cvss_score":8.3,"headline":"Linux Kernel Heap Out-of-Bounds Write","id":"CVE-2021-22555","kev_date_added":"2025-10-06","published":"2021-07-07"},{"cvss_score":9.8,"headline":"Command injection in Brocade Fabric OS","id":"CVE-2022-33186","kev_date_added":null,"published":"2022-12-08"},{"cvss_score":9.8,"headline":"Hardcoded credentials in Brocade Fabric OS","id":"CVE-2021-27797","kev_date_added":null,"published":"2022-02-21"},{"cvss_score":9.8,"headline":"Code injection in Brocade Fabric OS","id":"CVE-2020-15371","kev_date_added":null,"published":"2020-09-25"},{"cvss_score":9.8,"headline":"Memory corruption in Brocade Fabric OS","id":"CVE-2020-15373","kev_date_added":null,"published":"2020-09-25"},{"cvss_score":9.8,"headline":"Cross-site scripting in Brocade Fabric OS","id":"CVE-2020-15374","kev_date_added":null,"published":"2020-09-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-14","vendors":["n/a"]},"summary":"A malicious HTTPS proxy can bypass TLS certificate checks in libcurl via session ticket confusion, enabling Man-in-the-Middle attacks.","url":"https://insights.sbomify.com/CVE-2021-22890/"}