{"schemaVersion":3,"id":"CVE-2026-34979","aliases":["ALPINE-CVE-2026-34979","UBUNTU-CVE-2026-34979","DEBIAN-CVE-2026-34979"],"status":"published","duplicateOf":null,"title":null,"description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.","dates":{"published":"2026-04-03T21:16:38.594Z","modified":"2026-04-07T14:19:07.586Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Alpine","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":10,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00413,"percentile":0.34176,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.034,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00379},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00413,"percentile":0.34176}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00379,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00413,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00413,"percentile":0.34176}]},"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":[{"id":"GITHUB_OPENPRINTING_CUPS","name":"Cups","source":"github","url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-cxc6-w2g7-69p7","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-122","name":"Heap-based Buffer Overflow","description":"A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().","type":"weakness","status":"Draft","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/122.html"}],"affected":[{"vendor":"alpine","product":"cups","name":"cups","label":"cups","ecosystem":"Alpine Linux","cpePart":null,"purl":"pkg:apk/alpine/cups","purlType":"apk","versions":[{"text":"< 2.4.18-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.4.18-r0","eol":null,"hubHref":null},{"vendor":"debian","product":"cups","name":"cups","label":"cups","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/cups","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 2.4.17-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 2.4.17-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"cups","name":"cups","label":"cups","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/cups","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 2.4.1op1-1ubuntu4.20","noFixRecorded":false,"fixedIn":null},{"text":"< 2.4.7-1.2ubuntu7.13","noFixRecorded":false,"fixedIn":null},{"text":"< 2.4.12-0ubuntu3.9","noFixRecorded":false,"fixedIn":null},{"text":"< 2.4.16-1ubuntu1.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 2.4.1op1-1ubuntu4.20 | < 2.4.7-1.2ubuntu7.13 | < 2.4.12-0ubuntu3.9 | < 2.4.16-1ubuntu1.2","eol":null,"hubHref":null},{"vendor":"openprinting","product":"cups","name":"cups","label":"cups","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.4.16","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.4.16","eol":null,"hubHref":"/vendor/openprinting/cups"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/OpenPrinting/cups/security/advisories/GHSA-6qxf-7jx6-86fh","label":"github.com/OpenPrinting/cups/security/advisories/GHSA-6qxf-7jx6-86fh","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","Exploit","Vendor Advisory"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2026-34979","label":"security.alpinelinux.org/vuln/CVE-2026-34979","hostname":"security.alpinelinux.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-34979","label":"ubuntu.com/security/CVE-2026-34979","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-34979","label":"www.cve.org/CVERecord?id=CVE-2026-34979","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8405-1","label":"ubuntu.com/security/notices/USN-8405-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-34979","label":"security-tracker.debian.org/tracker/CVE-2026-34979","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34979","label":"nvd.nist.gov/vuln/detail/CVE-2026-34979","hostname":"nvd.nist.gov","tags":["Oval","Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2026-0201","OPENSUSE-SU-2026:10589-1","RHSA-2026:8814","SUSE-SU-2026:2718-1","SUSE-SU-2026:2732-1","USN-8405-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:10589-1","SUSE-SU-2026:2718-1","SUSE-SU-2026:2732-1","USN-8405-1"]},"timeline":[{"kind":"published","date":"2026-04-03T21:16:38.594Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-07T14:19:07.586Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":31,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:10:48.942Z","stale":false,"partial":false}}