8.6

CVE-2024-23324: envoyproxy envoy Improper Input Validation

CVSS: 8.6v3.1HighModified
Published 09-02-2024Last modified 19-08-2024
Open JSON

Vulnerability summary

CVE-2024-23324 is a high (CVSS 8.6) Improper Input Validation vulnerability in envoyproxy envoy. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.7% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v3.1 (CVE.org)
EPSS score
0.60%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-02-2024
    PublishedVulnerability first disclosed.
  2. 19-08-2024
    Last modifiedVulnerability information updated.

Description

Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

0.00 pp

From 0.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.60%

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

Envoyproxy1 product
  • envoy< 1.26.7 | ≥ 1.26.0, < 1.26.7 | ≥ 1.27.0, < 1.27.3 | ≥ 1.28.0, < 1.28.1 | ≥ 1.29.0, < 1.29.1

1 vendor · 1 product

References

2 links