SecuriTricks - CVE-2025-30346

Description

Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.

Product(s) Impacted

Vendor	Product	Versions
Varnish-cache	Varnish Cache	<7.6.2
Varnish	Varnish Enterprise	<6.0.13r10

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-444

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	varnish-cache	varnish_cache	<7.6.2	/	/	/	/	/	/	/
a	varnish	varnish_enterprise	<6.0.13r10	/	/	/	/	/	/	/

References

https://varnish-cache.org/security/VSV00015.html

CVSS Score

5.4 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: HIGH
Privileges Required: NONE
Scope: CHANGED
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: NONE

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

View Vector String

Timeline

Published: March 21, 2025, 7:15 a.m.
Last Modified: March 21, 2025, 7:15 a.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

cve@mitre.org

CVE-2025-30346