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    CVE-2026-77113

    Path traversal in apport-unpack in Canonical Apport before 2.36.0, 2.34.2, and 2.28.4 on Linux allows an attacker to create or overwrite arbitrary files with the privileges of the executing user via an attacker controlled key names in crash report files.

    Published:Aug 20, 2026
    Last Modified:Aug 21, 2026
    EPS:Aug 20, 2026
    EPSS Score:0.00161
    CVSS Score:6.7

    Affected Products

    Vendor
    Canonical
    Product
    Apport

    Exploits

    https://github.com/0xROI/CVE-2026-77113

    Common Weakness Enumeration

    CWE-23 Relative Path Traversal

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-139 Relative Path Traversal
    CAPEC-76 Manipulating Web Input to File System Calls

    Related CVEs

    CVE-2025-5467 (CVSS 1.9) — It was discovered that process_crash() in data/apport in Canonical's Apport crash reporting tool may create cr…
    CVE-2025-5054 (CVSS 4.7) — Race condition in Canonical apport up to and including 2.32.0 allows a local attacker to leak sensitive inform…
    CVE-2020-11936 (CVSS 3.1) — gdbus setgid privilege escalation…
    CVE-2022-28653 (CVSS 7.5) — Users can consume unlimited disk space in /var/crash…
    CVE-2022-1242 (CVSS 7.8) — Apport can be tricked into connecting to arbitrary sockets as the root user…
    CVE-2021-3899 (CVSS 7.8) — There is a race condition in the 'replaced executable' detection that, with the correct local configuration, a…
    CVE-2023-1326 (CVSS 7.7) — A privilege escalation attack was found in apport-cli 2.26.0 and earlier which is similar to CVE-2023-26604. I…
    CVE-2021-3710 (CVSS 6.5) — An information disclosure via path traversal was discovered in apport/hookutils.py function read_file(). This …
    CVE-2021-3709 (CVSS 6.5) — Function check_attachment_for_errors() in file data/general-hooks/ubuntu.py could be tricked into exposing pri…
    CVE-2021-32557 (CVSS 5.2) — It was discovered that the process_report() function in data/whoopsie-upload-all allowed arbitrary file writes…

    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