[UPDATE] [medium] lxml: Vulnerability Allows Information Disclosure
A remote, anonymous attacker can exploit a vulnerability in lxml to disclose information.
CSIRTS triage
- What
- A vulnerability allows a remote, anonymous attacker to disclose information.
- Who is affected
- Deployments of lxml are affected by this vulnerability.
- Urgency
- Remediation is medium urgency due to the medium severity of the vulnerability and lack of current exploitation.
- Action
- Update to the latest version of lxml to address this vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1219
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-410660.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-41066 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for lxml
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[UPDATE] [hoch] Red Hat Enterprise Linux (lxml): Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungencert-bund · 2026-09-11
- highCVE-2026-49825: lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link att…nvd · 2026-08-20
- highCVE-2026-49825: lxml: javascript: URL bypass in Cleaner via xlink:hrefmsrc · 2026-08-11
More from CERT-Bund (BSI) Security Advisories
- high[UPDATE] [hoch] Red Hat Enterprise Linux (postgis, virtuoso-opensource): Mehrere Schwachstellen2026-09-11
- medium[UPDATE] [mittel] Red Hat Enterprise Linux: Mehrere Schwachstellen2026-09-11
- medium[UPDATE] [mittel] Linux Kernel: Schwachstelle ermöglicht Denial of Service2026-09-11
- medium[UPDATE] [mittel] Linux Kernel: Mehrere Schwachstellen2026-09-11
- high[UPDATE] [hoch] OpenSSL: Mehrere Schwachstellen2026-09-11