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CVE-2022-45059

26
FAUCET Score

CVE-2022-45059 is a request smuggling vulnerability affecting Varnish Cache versions 7.x before 7.1.2 and 7.2.x before 7.2.1, including Fedora Project distributions. Attackers can manipulate hop-by-hop headers to prevent critical headers from reaching the backend, potentially leading to unauthorized access or data manipulation. Rated High severity (CVSS 7.5), it is a network-based attack with low complexity and high impact on integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 7.0.0, < 7.1.2CPE matchmatch criteria
cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*
7.2.0CPE matchmatch criteria
cpe:2.3:a:varnish_cache_project:varnish_cache:7.2.0:*:*:*:*:*:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 44th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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

Remediation

Vendor Advisories (1)

redhatCVE-2022-45059Important

varnish: Request Smuggling Vulnerability

Nov 8, 2022

References

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/G6ZMOZVBLZXHEV5VRW4I4SOWLQEK5OF5
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/M4KVVCIQVINQQ2D7ORNARSYALMJUMP3I
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XGF6LFTHXCSYMYUX5HLMVXQH3WHCSFLU
varnish-cache.org / security/VSV00010.html
MitigationVendor Advisory