CVE-2019-8341

highpriority · attend · 64EPSS 0.439 · 99 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

2 exploits · PoC

Likely / severe?

43.9% (99th) EPSS

CVSS 7.5 · high

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

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

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.18.2highAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-77US

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-46386Jinja2 2.10 - 'from_string' Server Side Template InjectionPoC · exploit_db
adindrabkin/llama_factsWeb application vulnerable to Python3 Flask SSTI (CVE-2019-8341)PoC · poc_in_github

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Pocoo Jinja2≤ 2.10fstec_bduRU
opensuse leap= 15.0nvdUScpe:2.3:o:opensuse:leap:*:*:*:*:*:*:*:*
opensuse leap= 42.3nvdUScpe:2.3:o:opensuse:leap:*:*:*:*:*:*:*:*
pocoo jinja2= 2.10nvdUScpe:2.3:a:pocoo:jinja2:*:*:*:*:*:*:*:*

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-02-15modified 2026-06-17

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+10439 more

references (29)

External citations — patches, advisories, analysis.

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