Perl

Related CVEsby mentions

• CVE-2026-120879.1<1%
  Socket versions before 2.041 for Perl have an out-of-bounds heap read.
  Socket versions before 2.041 for Perl have an out-of-bounds heap read. In Socket.xs, pack_ip_mreq_source() checks the length of its source argument before the argument is read, so the check tests the byte length carried over from the preceding multiaddr argument instead. Both addresses occupy a 4-byte field, so a valid multiaddr lets a source of any length pass the check, and the source is then copied into the 4-byte imr_sourceaddr field with a fixed-size copy. A source shorter than 4 bytes is not rejected, and the copy reads up to 3 bytes past the end of its buffer. Calling…
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• CVE-2026-132219.1<1%
  Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alterna
  Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently incorrect regular expression matches when an alternation of more than 65535 fixed string branches is compiled into a trie in Perl_study_chunk. When such branches are combined into a trie, the delta between the first branch and the shared tail is stored in a 16-bit field. A branch count above 65535 overflows the field, and the trie's match decision table is truncated with no warning or error. A pattern of this shape produces false positive matches (matching strings it should not) and…
  · perl perl—
• CVE-2026-155345.7<1%
  Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch.
  Perl versions through 5.45.1 have out-of-bounds heap reads and writes during regular expression matching via an undersized superlinear cache in S_regmatch. The regex engine's superlinear cache holds one bit per subject position for each participating WHILEM node, so the bit count is the subject length plus one times the number of nodes. Nothing checks that product for positive overflow of the signed 32-bit count: a 286331153 byte subject matched against a pattern with 15 participating nodes stores the count as 14, leaving a two byte cache. The cache is then indexed from the real match…
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• CVE-2026-194875.3<1%
  Perl regex engine flaw yields incorrect match results via stale failure flag
  Perl versions from 5.9.4 before 5.41.9 can produce incorrect regular-expression match results because a stale failure flag in the Aho-Corasick prescan (S_find_byclass) is not cleared when a later transition succeeds, causing the prescan to stop before it records an earlier valid match position. The flaw is triggered by alternation patterns where one candidate position is recorded and a later character then forces a fallback through a fail link that succeeds; for example, 'ABCDE' =~ m/ABCF|BCDE|C/ matches C at offset 2 instead of BCDE, and m/ABCF|BCDE|C(G/) fails to match at all. An attacker who controls input to such a regex can make an access-control, validation, or filtering decision resolve incorrectly, either matching the wrong alternative branch or missing a match entirely, with impact rated low (CVSS 5.3, medium). Any application running an affected Perl interpreter whose security-relevant regexes use alternations is exposed, and because Perl ships by default with virtually all Linux and Unix systems the installed base is enormous even though only specific pattern shapes trigger the bug. No public proof-of-concept is known, the issue is not in CISA KEV, and EPSS puts the 30-day exploitation probability at 0.4%, so no exploitation is currently known.
  · Perl >= 5.9.4 and < 5.41.9 (fixed in 5.41.9) · Ubuntu perl (distribution packages)mass

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