How many CVEs have patched regex_?

1 published CVEs changed regex_ in envoyproxy/envoy, in 1 distinct patches totalling 2 changed lines, between 2026 and 2026.

What is the latest CVE that changed regex_?

CVE-2026-73552 (Envoy: HTTP RBAC safe_regex can fail open on RFC-valid obs-text header values), published 2026-09-21, changed lines 59 of source/common/common/regex.cc.

How does regex_ compare to the rest of envoyproxy/envoy?

envoyproxy/envoy has 44 CVEs with a located fix in total; 1 of them changed regex_.

What do the line numbers refer to?

Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

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Patched Functions
Envoyproxy
Envoy
Regex_

regex_ in envoyproxy/envoy: Patched by 1 CVEs

envoyproxy/envoy

Function

regex_

Name: regex_ in envoyproxy/envoy: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

source/common/common/regex.cc

Last patched September 21, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

regex_ in envoyproxy/envoy was changed by 1 published CVE fixes in 2026, in 1 distinct patches that added or removed 2 lines in total.

envoyproxy/envoy has 44 CVEs with a located fix in total, so 2% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed regex_, newest first, with the lines each fix touched.

On this page

Overview
CVEs that patched it
Other functions in these files
Other hotspots in the repository
FAQ
References

Envoy: HTTP RBAC safe_regex can fail open on RFC-valid obs-text header values
CVE-2026-73552 · line 59 · +1 −1
High · CVSS 7.5
EPSS 0.5%2026-09-21

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1initRe2Optionssource/common/common/regex.cc1 CVEs · 1 patches2026

Other hotspots in the repository

Functions in envoyproxy/envoy changed by the most CVE fixes.

MessageDone3 CVEs · source/common/http/http1/balsa_parser.cc decodeHeaders2 CVEs · source/common/http/conn_manager_impl.cc saw_downstream_reset_2 CVEs · source/common/http/filter_manager.h maybeEndDecode2 CVEs · source/common/http/filter_manager.cc bufferedData2 CVEs · source/common/http/filter_manager.cc sendProtocolError2 CVEs · source/common/http/http1/codec_impl.cc

All patched functions in envoyproxy/envoy

Frequently asked questions

Common questions about CVE fixes to regex_.

How many CVEs have patched regex_?: 1 published CVEs changed regex_ in envoyproxy/envoy, in 1 distinct patches totalling 2 changed lines, between 2026 and 2026.
What is the latest CVE that changed regex_?: CVE-2026-73552 (Envoy: HTTP RBAC safe_regex can fail open on RFC-valid obs-text header values), published 2026-09-21, changed lines 59 of source/common/common/regex.cc.
How does regex_ compare to the rest of envoyproxy/envoy?: envoyproxy/envoy has 44 CVEs with a located fix in total; 1 of them changed regex_.
What do the line numbers refer to?: Line numbers are in the fixed version of the file, as the upstream patch left it. A CVE whose fix was backported to several branches is listed once, with the lines from the upstream commit.

References

source/common/common/regex.cc on GitHub (opens in a new tab)
All patched functions in envoyproxy/envoy
Patched functions directory

Fix locations are computed by RadicalNotion.AI from the upstream patch diff of each CVE. CVE data is sourced from the CVE Program.

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