7.5

CVE-2022-39271: traefik Uncontrolled Resource Consumption

CVSS: 7.5v3.1HighModified
AliasesGHSA-c6hx-pjc3-7fqr
Published 11-10-2022Last modified 23-04-2025
Open JSON

Vulnerability summary

CVE-2022-39271 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in traefik. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.35%
0%100%
Low · +0.23 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-10-2022
    PublishedVulnerability first disclosed.
  2. 23-04-2025
    Last modifiedVulnerability information updated.

Description

Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.35%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

+0.23 pp

From 1.12% on 18-09-2026

18-09-202618-10-2026
EPSS score
1.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/traefik/traefik1 product
  • v2< 2.8.8 | ≥ 2.9.0-rc1, < 2.9.0-rc5
Traefik1 product
  • traefikEOL≥ 2.9.0-rc1, < 2.9.0-rc5 | < 2.8.8 | 2.9.0:rc1 | 2.9.0:rc2 | 2.9.0:rc3 | 2.9.0:rc4

2 vendors · 2 products

References

5 links