{"id":"CVE-2026-11972","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-11972","generatedAt":"2026-10-28T02:18:55.999Z","title":"When using the \"tarfile\" module with a file opened in \"streaming mode\" (mode=\"r|\") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.","description":"When using the \"tarfile\" module with a file opened in \"streaming mode\" (mode=\"r|\") the tarfile module did not properly handle EOF, making archive parsing take exponentially longer.","published":"2026-06-23T23:16:49.000Z","lastModified":"2026-10-25T23:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"cna@python.org","cvss":{"version":"4.0","score":8.2,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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/M"},"cwe":["CWE-252","CWE-606","CWE-770"],"affected":[],"epss":{"score":0.00715,"percentile":0.53479,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/python/cpython/commit/3f031d431f80668e14f3bc066bbf4369cd9281b9","source":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/4ce6bf7c8aa7725828a38981c306f214c1f29365","source":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/7f0dc59c9a70f8f3b4da33d7c4a2ba552a7acc21","source":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/e86666c9dd256d52d0fbef6feb1ea4a51768fdec","source":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/eb63c0f94dfcbea7fda8eab6213818e134d67192","source":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/f50bf13566189c8d0ce5a814f33eff3d89951896","source":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/f5e2776ff0383a902c12acf2b703e7e951fc8438","source":"cna@python.org"},{"url":"https://github.com/python/cpython/issues/151981","source":"cna@python.org"},{"url":"https://github.com/python/cpython/pull/151982","source":"cna@python.org"},{"url":"https://mail.python.org/archives/list/security-announce@python.org/thread/AXPSKKTSRKXTTJULW3XSIC74WZNAAPPB/","source":"cna@python.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-11972","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}