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CVE-2022-3252

25
FAUCET Score

CVE-2022-3252 is a denial-of-service vulnerability in SwiftNIO Extras' HTTPRequestDecompressor and HTTPResponseDecompressor components, affecting Apple SwiftNIO Extras. The flaw stems from improper detection of complete HTTP body decompression, allowing an attacker to send trailing junk data that causes an infinite loop and livelock. Rated 7.5 HIGH on CVSS, this low-effort attack requires no privileges and can lead to high availability impact, as the process becomes unavailable without immediately crashing. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.9.2CPE matchmatch criteria
cpe:2.3:a:apple:swift-nio-extras:*:*:*:*:*:*:*:*
>= 1.10.0, < 1.10.3CPE matchmatch criteria
cpe:2.3:a:apple:swift-nio-extras:*:*:*:*:*:*:*:*
>= 1.11.0, < 1.14.0CPE matchmatch criteria
cpe:2.3:a:apple:swift-nio-extras:*:*:*:*:*:*:*:*

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:N/A:H

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

Exploit Intelligence

EPSS Score
0.75%
Probability of exploitation in next 30 days
EPSS Percentile
51.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0075 is in the 27th percentile among its peer group of 51,455 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

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 (5)

djangopatch availablevia llm_extracted
falcopatch availablevia llm_extracted
swiftpatch availablevia ghsa
Product: github.com/apple/swift-nio-extrasFixed in: 1.14.0
swiftpatch availablevia ghsa
Product: github.com/apple/swift-nio-extrasFixed in: 1.10.3
swiftpatch availablevia ghsa
Product: github.com/apple/swift-nio-extrasFixed in: 1.9.2

Vendor Advisories (3)

swiftGHSA-773g-x274-8qmfhigh

SwiftNIO Extras vulnerable to improper detection of complete HTTP body decompression

Jun 7, 2023
falcollm-falco-cc00dfe244cad6b8

Improper detection of complete HTTP body decompression in SwiftNIO Extras leading to denial of service.

djangollm-django-efc28e07876fe0b9

CVE-2022-3252

References

github.com / apple/swift-nio-extras/security/advisories/GHSA-773g-x274-8qmf
Third Party Advisory