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CVE-2022-21686

31
FAUCET Score

CVE-2022-21686 is a critical vulnerability affecting PrestaShop versions 1.7.0.0 through 1.7.8.3, allowing attackers to inject Twig code within the back office when using the legacy layout. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, the high severity warrants immediate patching to version 1.7.8.3 as no workarounds exist.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.7.0.0, <= 1.7.8.3CPE matchmatch criteria
cpe:2.3:a:prestashop:prestashop:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.79%
Probability of exploitation in next 30 days
EPSS Percentile
76.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0179 is in the 64th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: prestashop/prestashopFixed in: 1.7.8.3
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-mrq4-7ch7-2465critical

Server Side Twig Template Injection

Jan 27, 2022

References

github.com / PrestaShop/PrestaShop/commit/d02b469ec365822e6a9f017e57f588966248bf21
PatchThird Party Advisory
github.com / PrestaShop/PrestaShop/releases/tag/1.7.8.3
Release NotesThird Party Advisory
github.com / PrestaShop/PrestaShop/security/advisories/GHSA-mrq4-7ch7-2465
Third Party Advisory