How many CVEs have patched websocket_mask?

3 published CVEs changed websocket_mask in tornadoweb/tornado, in 2 distinct patches totalling 147 changed lines, between 2026 and 2026.

What is the latest CVE that changed websocket_mask?

CVE-2026-49855 (tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)), published 2026-07-14, changed lines 5 to 74 of tornado/speedups.c.

How does websocket_mask compare to the rest of tornadoweb/tornado?

tornadoweb/tornado has 16 CVEs with a located fix in total; 3 of them changed websocket_mask.

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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tornadoweb/tornado

Function

websocket_mask

Name: websocket_mask in tornadoweb/tornado: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

tornado/speedups.c

Last patched July 14, 2026

3

CVEs

That changed this function

2

Distinct patches

Backports counted once

147

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

websocket_mask in tornadoweb/tornado was changed by 3 published CVE fixes in 2026, in 2 distinct patches that added or removed 147 lines in total.

tornadoweb/tornado has 16 CVEs with a located fix in total, so 19% of them touched this function.

CVEs that patched it

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

tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)
CVE-2026-49855 · lines 5–74 · +31 −18
High · CVSS 7.5
EPSS 0.6%2026-07-14
Tornado: Out-of-bounds memory access in C extension
CVE-2026-49854 · lines 5–74 · +31 −18
Medium · CVSS 5.3
EPSS 0.4%2026-07-14
Tornado: Authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient
CVE-2026-49853 · lines 5–74 · +31 −18
High · CVSS 7.7
EPSS 0.5%2026-07-14

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1PyInit_speedupstornado/speedups.c3 CVEs · 2 patches2026

Other hotspots in the repository

Functions in tornadoweb/tornado changed by the most CVE fixes.

_websocket_mask_python4 CVEs · tornado/util.py parse_body_arguments3 CVEs · tornado/httputil.py parse_multipart_form_data3 CVEs · tornado/httputil.py close3 CVEs · tornado/curl_httpclient.py initialize3 CVEs · tornado/curl_httpclient.py ioctl3 CVEs · tornado/curl_httpclient.py

All patched functions in tornadoweb/tornado

Frequently asked questions

Common questions about CVE fixes to websocket_mask.

How many CVEs have patched websocket_mask?: 3 published CVEs changed websocket_mask in tornadoweb/tornado, in 2 distinct patches totalling 147 changed lines, between 2026 and 2026.
What is the latest CVE that changed websocket_mask?: CVE-2026-49855 (tornado AsyncHTTPClient accumulates decompressed chunks without size limit (gzip bomb)), published 2026-07-14, changed lines 5 to 74 of tornado/speedups.c.
How does websocket_mask compare to the rest of tornadoweb/tornado?: tornadoweb/tornado has 16 CVEs with a located fix in total; 3 of them changed websocket_mask.
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

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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