DSA-6363-1 python-urllib3 - security update
It was discovered that the urllib3 Python HTTP library didn't sanitise some cross-origin redirects, which could result in information disclosure. https://security-tracker.debian.org/tracker/DSA-6363-1
CSIRTS triage
- What
- The library didn't sanitize some cross-origin redirects, leading to potential information disclosure.
- Who is affected
- Users of urllib3 are affected.
- Urgency
- Remediation is important to prevent potential information leaks.
- Action
- Update to the latest version of urllib3.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://lists.debian.org/debian-security-announce/2026/msg00274.html
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-2026-444310.53% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-44431 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
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