CVE-2026-86145

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    CVE-2026-86145

    Published: 5 Sept 2026Last Modified: 27 Sept 2026

    Summary:

    Details: 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).

    References: http://www.openwall.com/lists/oss-security/2026/09/05/3, https://github.com/PCRE2Project/pcre2/releases/tag/pcre2-10.48, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86145.json, https://github.com/PCRE2Project/pcre2/security/advisories/GHSA-3r4p-g7gg-ppmf, https://nvd.nist.gov/vuln/detail/CVE-2026-86145

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 89296a3b3b6de2a58b4c7f2bb3d780a4f97cad39
    Fixed -7978954dbd2efc6f2196869290553cf1871b4ce6

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High