CVE-2023-49293 [Medium]

Vite is a website frontend framework. When Vite's HTML transformation is invoked manually via `server.transformIndexHtml`, the original request URL is passed in unmodified, and the `html` being transformed contains inline module scripts (`<script type="module">...</script>`), it is possible to inject arbitrary HTML into the transformed output by supplying a malicious URL query string to `server.transformIndexHtml`. Only apps using `appType: 'custom'` and using the default Vite HTML middleware are affected. The HTML entry must also contain an inline script. The attack requires a user to click on a malicious URL while running the dev server. Restricted files aren't exposed to the attacker. This issue has been addressed in [email protected], [email protected], and [email protected]. There are no known workarounds for this vulnerability.

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

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nvd_ref

exploit_tag

Exploit-DB ↗

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	7.32%	1.00%	-6.32%
2	2026-06-01	8.29%	7.32%	-0.97%
3	2026-05-26	—	8.29%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

7.32%

1.00%

-6.32%

2026-06-01

8.29%

7.32%

-0.97%

2026-05-26

—

8.29%

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Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.1	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.8	2.7	[email protected]
6.1	3.1	MEDIUM	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.8	2.7	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.1

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.8

2.7

[email protected]

6.1

3.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R): A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

2.8

2.7

[email protected]

OS Trackers for CVE-2023-49293

vendor	priority	summary	link
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2023-49293

vendor

priority

summary

link

redhat

medium

—

https://access.redhat.com/security/cve/CVE-2023-49293

Affected software / configurations for CVE-2023-49293

Vendor	Product	Version	Raw CPE
vitejs	vite	>= 4.4.0, <= 4.4.11	cpe:2.3:a:vitejs:vite::::::node.js::*
vitejs	vite	>= 5.0.0, <= 5.0.4	cpe:2.3:a:vitejs:vite::::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:-::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta0::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta1::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta10::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta11::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta12::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta13::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta14::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta15::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta16::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta17::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta18::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta19::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta2::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta20::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta3::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta4::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta5::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta6::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta7::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta8::::node.js::*
vitejs	vite	5.0.0	cpe:2.3:a:vitejs:vite:5.0.0:beta9::::node.js::*

References for CVE-2023-49293

URL	Tags
https://github.com/vitejs/vite/security/advisories/GHSA-92r3-m2mg-pj97	Exploit Third Party Advisory

URL

CVE-2023-49293 | Cross-site Scripting in `server.transformIndexHtml` via URL payload in vite

Public exploit references (Exploit-DB) for CVE-2023-49293

Exploit prediction scoring system (EPSS) score for CVE-2023-49293

Common vulnerability scoring system (CVSS) metrics for CVE-2023-49293

Weakness enumeration for CVE-2023-49293

GitHub Security Advisory for CVE-2023-49293

OS Trackers for CVE-2023-49293

Affected software / configurations for CVE-2023-49293

References for CVE-2023-49293