CVE-2019-8341

Exp

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

Published: 2019-02-15 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-8341 is rated High Exploit Risk (82.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 25.41%, 96th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2019-8341

EDB-ID Source Kind Published Link
46386 exploit_db edb 2019-02-15 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2019-8341

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-23 36.59% 25.41% -11.18%
2 2026-01-16 37.40% 36.59% -0.81%
3 2025-12-01 — 37.40% —

Full EPSS history (31 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-8341

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2019-8341

OS Trackers for CVE-2019-8341

vendor priority summary link
debian unimportant CVE-2019-8341 unimportant priority: Debian including 1 source packages (jinja2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2019-8341
redhat high — https://access.redhat.com/security/cve/CVE-2019-8341
suse high CVE-2019-8341 severity important: SUSE including 153 source package names (1.8.6.0.3.2.5:python3-Jinja2-2.10.1-3.5.1, 15.2.3.579.3.383:python3-Jinja2-2.10.1-3.5.1, …), 577 product×package rows across 305 product lines (Container ses/7.1/cephcsi/cephcsi, Container ses/7.1/rook/ceph, … (305 product lines)): Fixed 575, Will Not Fix 2. https://www.suse.com/security/cve/CVE-2019-8341/
ubuntu medium CVE-2019-8341 medium priority: Ubuntu including 1 source packages (jinja2), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): ignored 4, needs-triage 1. https://ubuntu.com/security/CVE-2019-8341

Affected software / configurations for CVE-2019-8341

Vendor Product Version Raw CPE
pocoo jinja2 2.10 cpe:2.3:a:pocoo:jinja2:2.10:*:*:*:*:*:*:*
opensuse leap 15.0 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
opensuse leap 42.3 cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*

References for CVE-2019-8341

cvelogic Threat Intelligence