CVE-2024-23322

Envoy crashes when idle and request per try timeout occur within the backoff interval

HIGH

7.5

CVSS Score

Published: February 9, 2024 at 10:51 PM UTC

Updated: June 17, 2026 at 07:12 AM UTC

1 product affected across 1 vendorEnvoy

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Severity

HIGH7.5

Exploit prediction

EPSS 0.7%

SSVC

No known exploit

Description

Envoy is a high-performance edge/middle/service proxy. Envoy will crash when certain timeouts happen within the same interval. The crash occurs when the following are true: 1. hedge_on_per_try_timeout is enabled, 2. per_try_idle_timeout is enabled (it can only be done in configuration), 3. per-try-timeout is enabled, either through headers or configuration and its value is equal, or within the backoff interval of the per_try_idle_timeout. 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Envoy · Envoyproxy

95%

v < 1.26.7v < 1.27.3v < 1.28.1v < 1.29.11.26.0 ≤ v < 1.26.71.27.0 ≤ v < 1.27.31.28.0 ≤ v < 1.28.11.29.0 ≤ v < 1.29.1

Affected range stops below 1.26.7, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.27.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.28.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.29.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCPatchVendor Advisory

Source: [email protected]

https://github.com/envoyproxy/envoy/commit/843f9e6a123ed47ce139b421c14e7126f2ac685e

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://github.com/envoyproxy/envoy/security/advisories/GHSA-6p83-mfmh-qv38

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHGitHub_M

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-416

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