UnratedFix available
Fix CVE(s): CVE-2026-19487
Type: advisorySources: OSV
* SECURITY UPDATE: incorrect regular expression match when the Aho-Corasick prescan resumes after following a fail link - debian/patches/CVE-2026-19487.patch: reset the "failed" flag on a successful trie transition in S_find_byclass() in regexec.c, and add the upstream regression tests to t/re/re_tests - CVE-2026-19487
- Products
- libperl-dev, libperl5.26, perl, perl-base, perl-debug, perl-doc, perl-modules-5.26
- Affected versions
- Not specified
- Fixed versions
- 5.26.1-6ubuntu0.7+tuxcare.els5
- CVEs
- CVE-2026-19487
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:42 UTC · Revision 1
Source evidence
* SECURITY UPDATE: incorrect regular expression match when the Aho-Corasick prescan resumes after following a fail link - debian/patches/CVE-2026-19487.patch: reset the "failed" flag on a successful trie transition in S_find_byclass() in regexec.c, and add the upstream regression tests to t/re/re_tests - CVE-2026-19487
osv:CLSA-2026-1789043015
libperl-dev
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
libperl5.26
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
perl
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
perl-base
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
perl-debug
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
perl-doc
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
perl-modules-5.26
Fixed versions: 5.26.1-6ubuntu0.7+tuxcare.els5
Complete source record
{
"id": "3cb51742a121130d9478f3a870f846ca0509c9dc347ac0f7cccf7f85efde9b40",
"url": "https://osv.dev/vulnerability/CLSA-2026-1789043015",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Fix CVE(s): CVE-2026-19487",
"summary": "* SECURITY UPDATE: incorrect regular expression match when the Aho-Corasick prescan resumes after following a fail link - debian/patches/CVE-2026-19487.patch: reset the \"failed\" flag on a successful trie transition in S_find_byclass() in regexec.c, and add the upstream regression tests to t/re/re_tests - CVE-2026-19487",
"evidence": "osv:CLSA-2026-1789043015",
"products": [
{
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"evidence": "/affected/0/package/name"
},
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{
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"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
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{
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{
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{
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{
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],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1789043015",
"aliases": [
"CLSA-2026-1789043015"
],
"affected": [
{
"ranges": [
{
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"package": {
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},
"database_specific": {
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{
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"package": {
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{
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"package": {
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"package": {
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"purl": "pkg:deb/tuxcare/perl-base?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
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"database_specific": {
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},
{
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],
"package": {
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"purl": "pkg:deb/tuxcare/perl-debug?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
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}
},
{
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}
]
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],
"package": {
"name": "perl-doc",
"purl": "pkg:deb/tuxcare/perl-doc?distro=ubuntu-18.04",
"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/ubuntu18.04els/CLSA-2026-1789043015.json"
}
},
{
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],
"package": {
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"ecosystem": "TuxCare:Ubuntu:18.04"
},
"database_specific": {
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}
}
],
"modified": "2026-10-26T09:32:04.274946707Z",
"provider": "osv",
"upstream": [
"CVE-2026-19487"
],
"references": [
"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2026-1789043015.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-19487"
]
},
"related_cves": [
{
"value": "CVE-2026-19487",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 449590,
"published_at": "2026-09-10T12:23:45+00:00"
}