{"id":"CVE-2025-6496","state":"PUBLISHED","title":"HTACG tidy-html5 parser.c InsertNodeAsParent null pointer dereference","description":"A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability affects the function InsertNodeAsParent of the file src/parser.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used.","publishedAt":"2025-06-23T00:00:15.786Z","updatedAt":"2025-06-23T13:06:58.408Z","severity":{"score":4.8,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["HTACG tidy-html5"],"affected":[{"vendor":"HTACG","product":"tidy-html5","versions":[{"version":"5.8.0","status":"affected"}]}],"references":["https://vuldb.com/?id.313612","https://vuldb.com/?ctiid.313612","https://vuldb.com/?submit.601007","https://github.com/htacg/tidy-html5/issues/1141","https://github.com/user-attachments/files/19652942/tidy-html5_crash.txt"],"weaknesses":["CWE-476","CWE-404"],"ingestedAt":"2026-10-29T20:10:04.440Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/6xxx/CVE-2025-6496.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-6496","state":"PUBLISHED","datePublished":"2025-06-23T00:00:15.786Z","dateUpdated":"2025-06-23T13:06:58.408Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2025-06-22T19:04:16.751Z"},"containers":{"cna":{"title":"HTACG tidy-html5 parser.c InsertNodeAsParent null pointer dereference","descriptions":[{"lang":"en","value":"A vulnerability was found in HTACG tidy-html5 5.8.0. It has been declared as problematic. This vulnerability affects the function InsertNodeAsParent of the file src/parser.c. The manipulation leads to null pointer dereference. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used."},{"lang":"de","value":"In HTACG tidy-html5 5.8.0 wurde eine Schwachstelle ausgemacht. Sie wurde als problematisch eingestuft. Betroffen ist die Funktion InsertNodeAsParent der Datei src/parser.c. Mit der Manipulation mit unbekannten Daten kann eine null pointer dereference-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs hat dabei lokal zu erfolgen. Der Exploit steht zur öffentlichen Verfügung."}],"affected":[{"vendor":"HTACG","product":"tidy-html5","versions":[{"version":"5.8.0","status":"affected"}]}],"references":[{"url":"https://vuldb.com/?id.313612","name":"VDB-313612 | HTACG tidy-html5 parser.c InsertNodeAsParent null pointer dereference","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.313612","name":"VDB-313612 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.601007","name":"Submit #601007 | htacg tidy-html5 tidy-html5 5.8.0 (commit d08ddc2) NULL Pointer Dereference","tags":["third-party-advisory"]},{"url":"https://github.com/htacg/tidy-html5/issues/1141","tags":["issue-tracking"]},{"url":"https://github.com/user-attachments/files/19652942/tidy-html5_crash.txt","tags":["exploit"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","type":"CWE","lang":"en","description":"NULL Pointer Dereference"}]},{"descriptions":[{"cweId":"CWE-404","type":"CWE","lang":"en","description":"Denial of Service"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2025-06-23T00:00:15.786Z"},"timeline":[{"time":"2025-06-22T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2025-06-22T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2025-06-22T21:09:34.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"JJLeo (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-06-23T13:05:47.435660Z","id":"CVE-2025-6496","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-06-23T13:06:58.408Z"}}]}}}