{"id":25429,"date":"2026-09-18T00:32:34","date_gmt":"2026-09-17T16:32:34","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-86000"},"modified":"2026-09-18T00:32:34","modified_gmt":"2026-09-17T16:32:34","slug":"cve-2026-86000","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-86000","title":{"rendered":"CVE-2026-86000 [MEDIUM] &#8211; Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2"},"content":{"rendered":"<p>Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.9, the selector parser in src\/soupsieve\/css_parser.py defines IDENTIFIER with adjacent quantified groups over overlapping character classes, and VALUE embeds IDENTIFIER for attribute selectors. When an attacker-controlled selector contains a long identifier or unquoted attribute-value run followed by input that makes the overall match fail, the regular expression engine explores quadratically many splits between the overlapping groups. User-controlled selectors can reach this path through soupsieve.compile(), soupsieve.select(), or BeautifulSoup.select(), while applications using only hard-coded selectors are unaffected. The resulting CPU consumption can hold the Python GIL, exhaust application workers, and stall a service; successful plain identifier matches are linear, and the issue does not cause memory corruption or code execution. The issue is fixed in version 2.9.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.9, the selector parser in src\/soupsieve\/css_parser.py defines IDENTIFIER with adjacent quantified groups over<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-25429","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/25429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}