{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-90668 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-90668 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-90668 is a high-severity denial of service vulnerability in UnrealIRCd, published on 13 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-2026-90668 and fix it if it is affected.\n\nWhat it is: CVE-2026-90668 is a high-severity denial of service vulnerability in UnrealIRCd, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-90668 in the wild and no public exploit code.\n\nAffected product: UnrealIRCd. 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-2026-90668/ (Markdown: https://insights.sbomify.com/CVE-2026-90668/index.md)","id":"CVE-2026-90668","markdown":"https://insights.sbomify.com/CVE-2026-90668/index.md","name":"CVE-2026-90668","record":{"aliases":["GHSA-fj9c-wr2v-556h"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"IRC server software","requires_auth":"none","summary":"Remote attackers can cause denial of service via excessive HTTP headers if websocket or JSON-RPC listeners are enabled.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","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/AU:Y/R:A/RE:L","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"The webserver in UnrealIRCd 6.0.5 through 6.2.6 before 6.2.7 does not limit the number of HTTP request headers, which allows remote attackers to cause a denial of service (memory consumption and unresponsive server) via an HTTP request with an unlimited number of headers, if a websocket or JSON-RPC listener is enabled (disabled by default).","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Denial of service in UnrealIRCd","id":"CVE-2026-90668","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Other in HAProxy","id":"CVE-2026-90678"},"packages":[],"prev":{"headline":"Security feature bypass in Socket Firewall","id":"CVE-2026-90651"},"products":["UnrealIRCd"],"published":"2026-09-13","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["UnrealIRCd"]},"summary":"Remote attackers can cause denial of service via excessive HTTP headers if websocket or JSON-RPC listeners are enabled.","url":"https://insights.sbomify.com/CVE-2026-90668/"}