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CVE-2023-28447

20
FAUCET Score

CVE-2023-28447 is a cross-site scripting (XSS) vulnerability in Smarty, a PHP template engine, affecting versions prior to 3.1.48 and 4.3.1. This flaw allows an attacker to execute arbitrary JavaScript in a user's browser due to improper escaping of JavaScript code. Rated as Medium severity (CVSS 6.1), it requires user interaction and could lead to unauthorized access, data manipulation, or unauthorized actions. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.1.48CPE matchmatch criteria
cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.3.1CPE matchmatch criteria
cpe:2.3:a:smarty:smarty:*:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
3.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.03%
Probability of exploitation in next 30 days
EPSS Percentile
60.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0103 is in the 72nd percentile among its peer group of 26,236 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: smarty/smartyFixed in: 4.3.1
composerpatch availablevia ghsa
Product: smarty/smartyFixed in: 3.1.48
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-7j98-h7fp-4vwjhigh

smarty Cross-site Scripting vulnerability in Javascript escaping

Mar 29, 2023

References

lists.debian.org / debian-lts-announce/2024/11/msg00013.html
github.com / smarty-php/smarty/commit/685662466f653597428966d75a661073104d713d
Patch
github.com / smarty-php/smarty/security/advisories/GHSA-7j98-h7fp-4vwj
Third Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/HSAUM3YHWHO4UCJXRGRLQGPJAO3MFOZZ
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/JBB35GLYTL6JL6EOM6BOZNYP47JKNNHT
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/P7O7SKTATM6GAP45S64QFXNLWIY5I7HP
Mailing ListThird Party Advisory