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CVE-2022-3918

28
FAUCET Score

CVE-2022-3918 is a CRLF injection vulnerability affecting FoundationNetworking in swift-corelibs-foundation, allowing an attacker to insert extra headers or even craft entirely new requests by injecting CRLF sequences into URLRequest header values. With a CVSS score of 8.8 (HIGH), this vulnerability has a network attack vector, low attack complexity, and can lead to high impacts on confidentiality, integrity, and availability if unsanitized user input is used in headers. While the EPSS and FAUCET Risk Score indicate a moderate to high risk, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.7.3CPE matchmatch criteria
cpe:2.3:a:apple:swift_foundation:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0078 is in the 46th percentile among its peer group of 17,822 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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)

djangopatch availablevia llm_extracted
falcopatch availablevia llm_extracted
github_advisoryworkaround availablevia nvd_reference
View patch

Vendor Advisories (2)

falcollm-falco-67000c441527b3d7

CRLF injection in URLRequest headers in FoundationNetworking.

djangollm-django-35677399fa424245

CVE-2022-3918

References

github.com / apple/swift-corelibs-foundation/security/advisories/GHSA-4pp3-mpf2-rj63
MitigationThird Party Advisory