CVE-2021-438188.2HighCWE-79

CVE-2021-43818: HTML Cleaner allows crafted and SVG embedded scripts to pass through

lxml

Vendor fix available · Affected: lxml · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

2.7%probability of exploitation in the next 30 days

85th percentile

050100

Higher than 85% of scored CVEs

8.2HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

lxml · lxml< 4.6.5

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Cross-site Scripting
Vendor: lxml
Published: December 2021
Band: Possible (1 to 10%), December 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-43818 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

2 more references are in the CVE record.