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buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.","status":"published","published":"2008-12-23T18:13:00Z","modified":"2024-08-07T10:56:47.251Z","updated_at":"2026-11-02T14:34:44.297409Z"}],"euvd":[{"id":"EUVD-2008-5532","description":"Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.","status":"published","published":"2008-12-23T18:13:00Z","modified":"2024-08-07T10:56:47Z","updated_at":"2026-11-03T01:38:42.900299Z"}],"ghsa":[{"id":"GHSA-frch-4gjp-rjjv","title":"Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring...","description":"Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.","status":"published","published":"2022-05-14T02:39:45Z","modified":"2023-02-02T05:06:02Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:52:13.666892Z"}],"nvd":[{"id":"CVE-2008-5557","description":"Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.","status":"published","published":"2008-12-23T18:30:03.313Z","modified":"2026-06-16T23:00:33.027Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:01:30.411919Z"}],"osv":[{"id":"DSA-1789-1","title":"php5 - several vulnerabilities","status":"published","published":"2009-05-04T00:00:00Z","modified":"2026-03-09T01:21:04.686666Z","updated_at":"2026-11-02T15:46:14.734124Z"},{"id":"DTSA-188-1","title":"php5 - several vulnerabilities","status":"published","published":"2009-01-28T00:00:00Z","modified":"2026-03-09T01:00:51.012573Z","updated_at":"2026-11-02T15:46:18.716547Z"},{"id":"RHSA-2009:0337","title":"Red Hat Security Advisory: php security update","status":"published","published":"2024-09-15T17:46:54Z","modified":"2026-06-26T10:10:40Z","updated_at":"2026-11-02T15:53:00.468834Z"},{"id":"RHSA-2009:0338","title":"Red Hat Security Advisory: php security update","status":"published","published":"2024-09-15T17:46:59Z","modified":"2026-06-26T10:10:41Z","updated_at":"2026-11-02T15:53:00.468834Z"},{"id":"RHSA-2009:0350","title":"Red Hat Security Advisory: php security update","status":"published","published":"2024-09-15T17:47:04Z","modified":"2025-11-22T10:20:02Z","updated_at":"2026-11-02T15:53:00.468834Z"}]}}