Htacg Tidy vulnerabilities

CVE-2025-6498 [MEDIUM] CWE-401 CVE-2025-6498: A vulnerability classified as problematic has been found in HTACG tidy-html5 5.8.0. Affected is the A vulnerability classified as problematic has been found in HTACG tidy-html5 5.8.0. Affected is the function defaultAlloc of the file src/alloc.c. The manipulation leads to memory leak. It is possible to launch the attack on the local host. The exploit has been disclosed to the public and may be used.

CVE-2021-33391 [CRITICAL] CWE-416 CVE-2021-33391: An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of t An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNode() function in gdoc.c.

CVE-2017-17497 [HIGH] CWE-119 CVE-2017-17497: In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a denial of In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a denial of service (Segmentation Fault), because the currentNode variable in the "children of the head" processing feature is modified in the loop without validating the new value.

CVE-2017-13692 [HIGH] CWE-20 CVE-2017-13692: In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service (Segmentation Fault), as demonstrated by an invalid ISALNUM argument.

CVE-2015-5522 [MEDIUM] CWE-119 CVE-2015-5522: Heap-based buffer overflow in the ParseValue function in lexer.c in tidy before 4.9.31 allows remote Heap-based buffer overflow in the ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving a command character in an href.

CVE-2015-5523 [MEDIUM] CWE-119 CVE-2015-5523: The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial o The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service (crash) via vectors involving multiple whitespace characters before an empty href, which triggers a large memory allocation.