ALAS2023-2026-3190: Security update for 3 packages

ALAS2023-2026-3190, released November 7, 2026, fixes 7 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: Urgent.

Urgent

CVEs closed

2 rated Critical

Exploited

None reported

Highest CVSS

9.1

Base score, 0 to 10

Highest EPSS

0.0042

36th percentile

Priority of the 7 CVEs

Patch now 0
                                Urgent 2
                                High 4
                                Routine 1

Fixed package versions

Product	Release	Fixed in
perl-Net-IDN-Encode	amzn 2023	2.590-1.amzn2023.0.1
perl-Net-IDN-Encode-debuginfo	amzn 2023	2.590-1.amzn2023.0.1
perl-Net-IDN-Encode-debugsource	amzn 2023	2.590-1.amzn2023.0.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
Urgent	CVE-2026-87078	libnet-idn-encode-perl: Net::IDN::Punycode versions from 2.302 before 2.590 for Perl leak the output buffer on every rejected label in decode...	9.1	0.0039	None reported
Urgent	CVE-2026-87080	libnet-idn-encode-perl: Net::IDN::Punycode::PP versions before 2.590 for Perl decode a truncated label to a name containing a character it ne...	9.1	0.0039	None reported
High	CVE-2026-87082	libnet-idn-encode-perl: Net::IDN::Punycode versions before 2.590 for Perl hang, crash or return a wrong label via unvalidated malformed UTF-8...	7.5	0.0042	None reported
High	CVE-2026-87079	libnet-idn-encode-perl: Net::IDN::Punycode versions before 2.590 for Perl allow CPU exhaustion via quadratic insertion cost when decoding a l...	7.5	0.0038	None reported
High	CVE-2026-87081	libnet-idn-encode-perl: Net::IDN::UTS46 versions before 2.590 for Perl allow CPU exhaustion via quadratic punycode encoding of an overlong la...	7.5	0.0038	None reported
High	CVE-2026-74766	libnet-idn-encode-perl: Net::IDN::Punycode versions from 2.301 before 2.590 for Perl allow a heap use-after-free via a decoded code point tha...	8.4	0.0014	None reported
Routine	CVE-2026-74765	libnet-idn-encode-perl: Net::IDN::Punycode versions before 2.590 for Perl allow an out-of-bounds read via integer overflow of the delta accum...	6.5	0.0033	None reported

Also fixes CVE-2026-87080

DEBIAN-CVE-2026-87080
libnet-idn-encode-perl on Debian 14

Vendor advisory

https://alas.aws.amazon.com/AL2023/ALAS-2026-3190.html

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