CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 1CVE-2022-2309 – NULL Pointer Dereference in lxml/lxml
https://notcve.org/view.php?id=CVE-2022-2309
05 Jul 2022 — NULL Pointer Dereference allows attackers to cause a denial of service (or application crash). This only applies when lxml is used together with libxml2 2.9.10 through 2.9.14. libxml2 2.9.9 and earlier are not affected. It allows triggering crashes through forged input data, given a vulnerable code sequence in the application. The vulnerability is caused by the iterwalk function (also used by the canonicalize function). Such code shouldn't be in wide-spread use, given that parsing + iterwalk would usually b... • https://github.com/lxml/lxml/commit/86368e9cf70a0ad23cccd5ee32de847149af0c6f • CWE-476: NULL Pointer Dereference •
CVSS: 8.8EPSS: 0%CPEs: 16EXPL: 0CVE-2021-43818 – HTML Cleaner allows crafted and SVG embedded scripts to pass through
https://notcve.org/view.php?id=CVE-2021-43818
13 Dec 2021 — lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available. lxml es una biblioteca para procesar XML y HTML en el lenguaje Python. En versiones anteriores a 4.6.5, el limpiador... • https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.1EPSS: 0%CPEs: 7EXPL: 1CVE-2021-28957 – python-lxml: Missing input sanitization for formaction HTML5 attributes may lead to XSS
https://notcve.org/view.php?id=CVE-2021-28957
21 Mar 2021 — An XSS vulnerability was discovered in python-lxml's clean module versions before 4.6.3. When disabling the safe_attrs_only and forms arguments, the Cleaner class does not remove the formaction attribute allowing for JS to bypass the sanitizer. A remote attacker could exploit this flaw to run arbitrary JS code on users who interact with incorrectly sanitized HTML. This issue is patched in lxml 4.6.3. Se ha descubierto una vulnerabilidad XSS en las versiones del módulo clean de python-lxml anteriores a la ve... • https://bugs.launchpad.net/lxml/+bug/1888153 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.1EPSS: 0%CPEs: 10EXPL: 2CVE-2020-27783 – python-lxml: mXSS due to the use of improper parser
https://notcve.org/view.php?id=CVE-2020-27783
03 Dec 2020 — A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code. Se detectó una vulnerabilidad de tipo XSS en el módulo de limpieza de python-lxml. El analizador del módulo no imitaba apropiadamente los navegadores, lo que causaba comportamientos diferentes entre el sanitizador y la página del usuario. • https://advisory.checkmarx.net/advisory/CX-2020-4286 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 6.1EPSS: 0%CPEs: 6EXPL: 0CVE-2018-19787 – Ubuntu Security Notice USN-3841-1
https://notcve.org/view.php?id=CVE-2018-19787
02 Dec 2018 — An issue was discovered in lxml before 4.2.5. lxml/html/clean.py in the lxml.html.clean module does not remove javascript: URLs that use escaping, allowing a remote attacker to conduct XSS attacks, as demonstrated by "j a v a s c r i p t:" in Internet Explorer. This is a similar issue to CVE-2014-3146. Se ha descubierto un problema en lxml en versiones anteriores a la 4.2.5. lxml/html/clean.py en el módulo lxml.html.clean no elimina las URL javascript: que utilizan escapado, permitiendo que un atacante remo... • https://github.com/lxml/lxml/commit/6be1d081b49c97cfd7b3fbd934a193b668629109 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 9.8EPSS: 2%CPEs: 95EXPL: 4CVE-2014-3146 – lxml - 'clean_html' Security Bypass
https://notcve.org/view.php?id=CVE-2014-3146
14 May 2014 — Incomplete blacklist vulnerability in the lxml.html.clean module in lxml before 3.3.5 allows remote attackers to conduct cross-site scripting (XSS) attacks via control characters in the link scheme to the clean_html function. Vulnerabilidad de lista negra incompleta en el módulo lxml.html.clean en lxml anterior a 3.3.5 permite a atacantes remotos realizar ataques de XSS a través de caracteres de control en la esquema de enlace hacia la función clean_html. Updated python-lxml packages fix a security vulnerab... • https://www.exploit-db.com/exploits/39155 •