CVE-2026-86145

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 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).

Database specific

{
    "cna_assigner": "mitre",
    "cwe_ids": [
        "CWE-424"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86145.json"
}

References

Affected packages

Git / github.com/pcre2project/pcre2

Affected ranges

Type

GIT

Repo

https://github.com/pcre2project/pcre2

Events

Introduced

89296a3b3b6de2a58b4c7f2bb3d780a4f97cad39

Fixed

7978954dbd2efc6f2196869290553cf1871b4ce6

Database specific

Show details

{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "10.32"
                },
                {
                    "fixed": "10.48"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "introduced": "2"
                },
                {
                    "fixed": "10.48"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-86145.json"