How many CVEs have patched once_s?

1 published CVEs changed once_s in perl/perl5, in 1 distinct patches totalling 154 changed lines, between 2026 and 2026.

What is the latest CVE that changed once_s?

CVE-2026-4176 (Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib), published 2026-03-29, changed lines 215 to 216 of cpan/Compress-Raw-Zlib/zlib-src/crc32.c.

How does once_s compare to the rest of perl/perl5?

perl/perl5 has 15 CVEs with a located fix in total; 1 of them changed once_s.

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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Once_s

once_s in perl/perl5: Patched by 1 CVEs

perl/perl5

Type

once_s

Name: once_s in perl/perl5: CVE fixes
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

cpan/Compress-Raw-Zlib/zlib-src/crc32.c

Last patched March 29, 2026

CVEs

That changed this function

Distinct patches

Backports counted once

154

Lines changed

Added plus removed

2026

Years

By CVE publication date

Overview

once_s in perl/perl5 was changed by 1 published CVE fixes in 2026, in 1 distinct patches that added or removed 154 lines in total.

perl/perl5 has 15 CVEs with a located fix in total, so 7% of them touched this function.

CVEs that patched it

Every published CVE whose fix changed once_s, 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

Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib
CVE-2026-4176 · lines 215–216 · +2 −152 in 2 hunks
Critical · CVSS 9.8
EPSS 0.8%2026-03-29

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Other functions in these files

Functions in the same file that CVE fixes also changed.

1braidcpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026
2crc32cpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026
3crc32_zcpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026
4get_crc_tablecpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026
5make_crc_tablecpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026
6multmodpcpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026
7x2nmodpcpan/Compress-Raw-Zlib/zlib-src/crc32.c1 CVEs · 1 patches2026

Other hotspots in the repository

Functions in perl/perl5 changed by the most CVE fixes.

structure1 CVEs · cpan/Socket/Socket.pm string1 CVEs · cpan/Socket/Socket.pm address1 CVEs · cpan/Socket/Socket.pm braid1 CVEs · cpan/Compress-Raw-Zlib/zlib-src/crc32.c get_crc_table1 CVEs · cpan/Compress-Raw-Zlib/zlib-src/crc32.c make_crc_table1 CVEs · cpan/Compress-Raw-Zlib/zlib-src/crc32.c

All patched functions in perl/perl5

Frequently asked questions

Common questions about CVE fixes to once_s.

How many CVEs have patched once_s?: 1 published CVEs changed once_s in perl/perl5, in 1 distinct patches totalling 154 changed lines, between 2026 and 2026.
What is the latest CVE that changed once_s?: CVE-2026-4176 (Perl versions from 5.9.4 before 5.40.4-RC1, from 5.41.0 before 5.42.2-RC1, from 5.43.0 before 5.43.9 contain a vulnerable version of Compress::Raw::Zlib), published 2026-03-29, changed lines 215 to 216 of cpan/Compress-Raw-Zlib/zlib-src/crc32.c.
How does once_s compare to the rest of perl/perl5?: perl/perl5 has 15 CVEs with a located fix in total; 1 of them changed once_s.
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

cpan/Compress-Raw-Zlib/zlib-src/crc32.c on GitHub (opens in a new tab)
All patched functions in perl/perl5
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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