CVE-2019-10906

In Pallets Jinja before 2.10.1, str.format_map allows a sandbox escape.

Published: 2019-04-07 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-10906 is rated High Risk (66.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.60%). EPSS rose +1.27% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2019-10906

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 2026-06-15 2.33% 3.60% +1.27%
2 2026-05-29 3.48% 2.33% -1.15%
3 2026-03-02 — 3.48% —

Full EPSS history (27 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-10906

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.6 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N 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:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 4.0 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:N 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:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-10906

GitHub Security Advisory for CVE-2019-10906

GHSA-462w-v97r-4m45 · Severity: high · Ecosystem: pip — Jinja2 sandbox escape via string formatting

OS Trackers for CVE-2019-10906

vendor priority summary link
debian not yet assigned CVE-2019-10906 not yet assigned priority: Debian including 1 source packages (jinja2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-10906
redhat high — https://access.redhat.com/security/cve/CVE-2019-10906
suse high CVE-2019-10906 severity important: SUSE including 391 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, …), 816 product×package rows across 309 product lines (Container ses/7.1/cephcsi/cephcsi, Container ses/7.1/rook/ceph, … (309 product lines)): Fixed 632, Known Affected 181, Known Not Affected 3. https://www.suse.com/security/cve/CVE-2019-10906/
ubuntu medium CVE-2019-10906 medium priority: Ubuntu including 1 source packages (jinja2), 6 status rows across 6 suites (bionic, cosmic, disco, trusty, upstream, xenial): released 6. https://ubuntu.com/security/CVE-2019-10906

Affected software / configurations for CVE-2019-10906

Vendor Product Version Raw CPE
palletsprojects jinja < 2.10.1 cpe:2.3:a:palletsprojects:jinja:*:*:*:*:*:*:*:*
fedoraproject fedora 28 cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
fedoraproject fedora 29 cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
canonical ubuntu_linux 19.04 cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
redhat software_collections 1.0 cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:*
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-2019-10906

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00030.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00064.html Mailing List Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1152 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1237 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1329 Third Party Advisory
https://lists.apache.org/thread.html/09fc842ff444cd43d9d4c510756fec625ef8eb1175f14fd21de2605f%40%3Cdevnull.infra.apache.org%3E
https://lists.apache.org/thread.html/2b52b9c8b9d6366a4f1b407a8bde6af28d9fc73fdb3b37695fd0d9ac%40%3Cdevnull.infra.apache.org%3E
https://lists.apache.org/thread.html/320441dccbd9a545320f5f07306d711d4bbd31ba43dc9eebcfc602df%40%3Cdevnull.infra.apache.org%3E
https://lists.apache.org/thread.html/46c055e173b52d599c648a98199972dbd6a89d2b4c4647b0500f2284%40%3Cdevnull.infra.apache.org%3E
https://lists.apache.org/thread.html/57673a78c4d5c870d3f21465c7e2946b9f8285c7c57e54c2ae552f02%40%3Ccommits.airflow.apache.org%3E
https://lists.apache.org/thread.html/7f39f01392d320dfb48e4901db68daeece62fd60ef20955966739993%40%3Ccommits.airflow.apache.org%3E
https://lists.apache.org/thread.html/b2380d147b508bbcb90d2cad443c159e63e12555966ab4f320ee22da%40%3Ccommits.airflow.apache.org%3E
https://lists.apache.org/thread.html/f0c4a03418bcfe70c539c5dbaf99c04c98da13bfa1d3266f08564316%40%3Ccommits.airflow.apache.org%3E
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DSW3QZMFVVR7YE3UT4YRQA272TYAL5AF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QCDYIS254EJMBNWOG4S5QY6AOTOR4TZU/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TS7IVZAJBWOHNRDMFJDIZVFCMRP6YIUQ/
https://palletsprojects.com/blog/jinja-2-10-1-released Release Notes Vendor Advisory
https://usn.ubuntu.com/4011-1/ Third Party Advisory
https://usn.ubuntu.com/4011-2/ Third Party Advisory
cvelogic Threat Intelligence