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    CVE-2025-6498

    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.

    Published:Jun 23, 2025
    Last Modified:Sep 30, 2025
    EPS:Jun 23, 2025
    EPSS Score:0.00019
    CVSS Score:3.3

    Affected Products

    Vendor
    Htacg
    Product
    Tidy

    Exploits

    https://github.com/htacg/tidy-html5/issues/1152https://github.com/user-attachments/files/20438303/tidy-html5_crash_3.txthttps://github.com/htacg/tidy-html5/issues/1152

    Related CVEs

    CVE-2025-6497 (CVSS 1.9) — A vulnerability was found in HTACG tidy-html5 5.8.0. It has been rated as problematic. This issue affects the …
    CVE-2025-6496 (CVSS 1.9) — A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability a…
    CVE-2021-33391 (CVSS 9.8) — An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrary code via the -g option of the CleanNo…
    CVE-2017-17497 (CVSS 7.5) — In Tidy 5.7.0, the prvTidyTidyMetaCharset function in clean.c allows attackers to cause a denial of service (S…
    CVE-2017-13692 (CVSS 7.5) — In Tidy 5.5.31, the IsURLCodePoint function in attrs.c allows attackers to cause a denial of service (Segmenta…
    CVE-2015-5522 (CVSS 6.8) — Heap-based buffer overflow in the ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers…
    CVE-2015-5523 (CVSS 4.3) — The ParseValue function in lexer.c in tidy before 4.9.31 allows remote attackers to cause a denial of service …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High