Categories
CVE-2026-26309

Envoy has an off-by-one write in JsonEscaper::escapeString()

Summary

Envoy has an off-by-one write in JsonEscaper::escapeString()

Original description

The description as published by the source.

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, an off-by-one write in Envoy::JsonEscaper::escapeString() can corrupt std::string null-termination, causing undefined behavior and potentially leading to crashes or out-of-bounds reads when the resulting string is later treated as a C-string. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Affected packages

Bitnami envoy
[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.34.13"},{"introduced":"1.35.0"},{"fixed":"1.35.9"},{"introduced":"1.36.0"},{"fixed":"1.36.5"},{"introduced":"1.37.0"},{"fixed":"1.37.1"}]}]

References

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