{"id":"CVE-2026-86145","title":"PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a …","summary":"PCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a …","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","cwe":["CWE-424","CWE-787"],"vendor":"PCRE","product":"PCRE2","affected":["PCRE2 >= 10.32 < 10.48"],"published":"2026-09-05","updated":"2026-09-09","sourceUpdated":"2026-09-09T16:04:24.933","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86145","references":[{"url":"https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48","label":"cve@mitre.org"},{"url":"https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-3r4p-g7gg-ppmf","label":"cve@mitre.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/05/3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86145.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-86145"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2528993"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86145"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86145"},{"url":"https://access.redhat.com/errata/RHSA-2026:67534"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00373,"epssPercentile":0.31023,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-08T18:07:40.203419Z"},"ingestedAt":"2026-09-06T02:48:40.090Z","patched":["hardened_images"],"slug":"CVE-2026-86145","body":"## Overview\n\nPCRE2 before 10.48 allows a pcre2_dfa_match out-of-bounds write because reuse of a cached workspace block, in a recursive DFA matching workspace, lacks a size check (even though a newly allocated block, for the same purpose, does have a size check). This outcome requires an attacker-controlled regular expression, or a recursive pattern in conjunction with a small heap limit (this can be set through the API).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86145.json)\n- **RHSA-2026:67534** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:67534)","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}