Technology · PyPI
lxml (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 8 vulnerabilities in lxml (PyPI): 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-49825, was published on 20 August 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About lxml (PyPI)
Python library for processing XML and HTML documents with support for XPath queries and XSLT transformations.
Latest lxml (PyPI) vulnerabilities
- CVE-2026-49825: lxml_html_clean XSS via xlink:href namespaced URL attributeshighCVSS 8.2EPSS 0.4%
- CVE-2026-41066: lxml XXE in iterparse and ETCompatXMLParserhighCVSS 7.5EPSS 0.3%
- CVE-2022-2309: lxml NULL Pointer Dereference allows attackers to cause a denial of servicelowCVSS 3EPSS 2.4%
- CVE-2021-43818: lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass throughlowCVSS 3.1EPSS 2.5%
- CVE-2021-28957: lxml vulnerable to Cross-Site ScriptinglowCVSS 3.1EPSS 4.0%
- CVE-2020-27783: lxml vulnerable to Cross-site ScriptinglowCVSS 3.1EPSS 4.0%
- CVE-2018-19787: Improper Neutralization of Input During Web Page Generation in LXMLlowCVSS 3EPSS 2.4%
- CVE-2014-3146: lxml Cross-site Scripting Via Control CharacterslowCVSS 3.1EPSS 6.3%
Most severe lxml (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-49825: lxml_html_clean XSS via xlink:href namespaced URL attributeshighCVSS 8.2EPSS 0.4%
- CVE-2026-41066: lxml XXE in iterparse and ETCompatXMLParserhighCVSS 7.5EPSS 0.3%
- CVE-2014-3146: lxml Cross-site Scripting Via Control CharacterslowCVSS 3.1EPSS 6.3%
- CVE-2021-28957: lxml vulnerable to Cross-Site ScriptinglowCVSS 3.1EPSS 4.0%
- CVE-2020-27783: lxml vulnerable to Cross-site ScriptinglowCVSS 3.1EPSS 4.0%
- CVE-2021-43818: lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass throughlowCVSS 3.1EPSS 2.5%
- CVE-2018-19787: Improper Neutralization of Input During Web Page Generation in LXMLlowCVSS 3EPSS 2.4%
- CVE-2022-2309: lxml NULL Pointer Dereference allows attackers to cause a denial of servicelowCVSS 3EPSS 2.4%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 1 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many lxml (PyPI) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/lxml)<a href="https://junglewise.ai/threats/technologies/lxml"><img src="https://junglewise.ai/threats/technologies/lxml/badge.svg" alt="lxml (PyPI) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/lxml.json, and this page as text at https://junglewise.ai/threats/technologies/lxml.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "lxml (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/lxml, 13 November 2026.