{"schemaVersion":3,"id":"CVE-2026-107279","aliases":["UBUNTU-CVE-2026-107279"],"status":"published","duplicateOf":null,"title":null,"description":"The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. In 3.0.12, a peer offering only Digest qop=auth-int causes mutual-authentication verification to be skipped. AuthenticatorUtils.computeExpectedRspAuth returns no expected value for auth-int, and Interceptors treats that result as unverifiable but nonfatal, so a response with an invalid rspauth value is accepted. A peer that does not know the shared secret can therefore be accepted as the authenticated server. This issue is fixed in version 3.0.13.","dates":{"published":"2026-10-07T21:10:26.049Z","modified":"2026-10-08T15:02:48.131Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":8.8,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00358,"percentile":0.28121,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-08T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00358,"percentile":0.28121}],"last30":[{"date":"2026-10-08T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00358,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00358,"percentile":0.28121}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-303","name":"Incorrect Implementation of Authentication Algorithm","description":"The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/303.html"},{"id":"CWE-757","name":"Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade')","description":"A protocol or its implementation supports interaction between multiple actors and allows those actors to negotiate which algorithm should be used as a protection mechanism such as encryption or authentication, but it does not select the strongest algorithm that is available to both parties.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/757.html"}],"affected":[{"vendor":"asynchttpclient","product":"async-http-client","name":"async-http-client","label":"async-http-client","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"= 3.0.12","noFixRecorded":false,"fixedIn":null}],"versionsText":"= 3.0.12","eol":null,"hubHref":"/vendor/asynchttpclient/async-http-client"},{"vendor":"ubuntu","product":"async-http-client","name":"async-http-client","label":"async-http-client","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/async-http-client","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-qhv6-3pmh-95q4","label":"github.com/AsyncHttpClient/async-http-client/security/advisories/GHSA-qhv6-3pmh-95q4","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT"]},{"url":"https://github.com/AsyncHttpClient/async-http-client/commit/a5422493b638226666a1ecb5f82826c7c7845b99","label":"github.com/AsyncHttpClient/async-http-client/commit/a5422493b638226666a1ecb5f82826c7c7845b99","hostname":"github.com","tags":["X Refsource MISC","REPORT"]},{"url":"https://github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13","label":"github.com/AsyncHttpClient/async-http-client/releases/tag/async-http-client-project-3.0.13","hostname":"github.com","tags":["X Refsource MISC","REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-107279","label":"ubuntu.com/security/CVE-2026-107279","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-107279","label":"www.cve.org/CVERecord?id=CVE-2026-107279","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-07T21:10:26.049Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-08T15:02:48.131Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T09:10:57.396Z","stale":false,"partial":false}}