CVE-2024-32976: envoyproxy envoy · Infinite Loop
Affects envoyproxy envoySource CVE Database V5
Public exploit available · CVSS 7.5 High.
Data as of 5 Nov 2026, 16:20 UTC
Thin evidence
One scorer or none| CNA (GitHub_M) | CVSS 3.1 | 7.5 |
|---|
- CISA SSVC
- Exploitation
- Proof of concept is public or traded
- Automatable
- Attackers can reliably automate steps 1–4 of the kill chain
- Technical impact
- Limited control over the software or limited information exposure
CISA SSVC assessment, 2024-09-03.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 4 Jun 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CISA SSVC: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by GitHub, Inc.
, 43 days before disclosure
CVE published
on cve.org
, t = 0
CISA SSVC assessment
proof of concept public
, 91 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| envoyproxyenvoy | Affected
| Fixed in– |
AI-suggested
Until a fix is applied, consider disabling the Brotli filter if feasible to prevent triggering the infinite loop.
Description
CVE-2024-32976 is a high-severity vulnerability in Envoyproxy's Brotli filter that causes an infinite loop during decompression of Brotli data containing extra input. This flaw affects multiple versions of Envoy from 1.18.0 through 1.30.1. The issue results in a denial of service due to the endless loop but does not impact confidentiality or integrity.