CVE-2019-8341

Name: CVE-2019-8341
Creator: NVD / NIST
Published: 2019-02-15T07:29:00.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 44.78%

Last modified Jun 17, 2026

CVE-2019-8341 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 44.78% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

44.78%

98.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Pocoo	Jinja2	2.10
Opensuse	Leap	15.0
Opensuse	Leap	42.3

References

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00030.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00064.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1677653Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1125815Issue Tracking, Third Party Advisory
https://github.com/JameelNabbo/Jinja2-Code-executionBroken Link
https://www.exploit-db.com/exploits/46386/Exploit, Third Party Advisory, VDB Entry
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00030.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00064.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1677653Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1125815Issue Tracking, Third Party Advisory
https://github.com/JameelNabbo/Jinja2-Code-executionBroken Link
https://www.exploit-db.com/exploits/46386/Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Feb 15, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-8341?

How severe is CVE-2019-8341?

CVE-2019-8341 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 44.78% probability of exploitation in the next 30 days.

How do I fix CVE-2019-8341?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-8341?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST