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Medium severity6.3NVD Advisory· Published Jul 25, 2023· Updated Jun 17, 2026

CVE-2023-35943

CVE-2023-35943

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the origin header is removed and deleted between decodeHeadersand encodeHeaders. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the origin header in the Envoy configuration.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

4
  • Envoy/envoyllm-fuzzy
    Range: <1.27.0, <1.26.4, <1.25.9, <1.24.10, <1.23.12
  • Envoyproxy/Envoyv52 versions
    >= 1.26.0, < 1.26.4+ 1 more
    • (no CPE)range: >= 1.26.0, < 1.26.4
    • cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*range: >=1.23.0,<1.23.12
  • osv-coords
    pkg:bitnami/envoy
    Range: >= 1.23.0, < 1.23.12

Patches

Vulnerability mechanics

References

1

News mentions

0

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