THREATPORT/VULNERABILITY/CVE-2019-8341
CRITICAL SEVERITY

CVE-2019-8341

Jinja2 vulnerability

CVSS
9.8
EPSS
44.8%
EPSS pct
99th
Exploited
No known
An issue was discovered in Jinja2 2.10. The from_string function is prone to Server Side Template Injection (SSTI) where it takes the "source" parameter as a template object, renders it, and then returns it. The attacker can exploit it with {{INJECTION COMMANDS}} in a URI. NOTE: The maintainer and multiple third parties believe that this vulnerability isn't valid because users shouldn't use untrusted templates without sandboxing
Affected vendor
Pocoo
Affected product
Jinja2
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2019-02-15

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 44.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2019-8341

  • Confirm whether Pocoo Jinja2 is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2019-8341.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-8341

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-8341 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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