Vulnerability · Published Aug 18, 2021 · Assigned by mitre
CVE-2021-39286
Medium 6.1
In plain English
A medium-severity security flaw in the pywb package (PyPI). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.1Medium
Exploit odds (30 days)0.7%top 46.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Webrecorder pywb before 2.6.0 allows XSS because it does not ensure that Jinja2 templates are autoescaped.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | pywb | 2.6.0 | GHSA-947x-pv47-pp3q |
| PyPI | pywb | 2.6.0 | PYSEC-2021-120 |