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    CVE-2018-18494

    A same-origin policy violation allowing the theft of cross-origin URL entries when using the Javascript location property to cause a redirection to another site using performance.getEntries(). This is a same-origin policy violation and could allow for data theft. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

    Published:Dec 11, 2018
    Last Modified:Nov 25, 2025
    EPS:Feb 28, 2019
    EPSS Score:0.01111
    CVSS Score:6.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Mozilla
    Product
    Firefox
    Vendor
    Mozilla
    Product
    Thunderbird
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Enterprise Linux Desktop
    Vendor
    Redhat
    Product
    Enterprise Linux Server
    Vendor
    Redhat
    Product
    Enterprise Linux Server Aus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Eus
    Vendor
    Redhat
    Product
    Enterprise Linux Server Tus
    Vendor
    Redhat
    Product
    Enterprise Linux Workstation

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-111 JSON Hijacking (aka JavaScript Hijacking)
    CAPEC-141 Cache Poisoning
    CAPEC-142 DNS Cache Poisoning
    CAPEC-160 Exploit Script-Based APIs
    CAPEC-175 Code Inclusion
    CAPEC-201 Serialized Data External Linking
    CAPEC-21 Exploitation of Trusted Identifiers
    CAPEC-228 DTD Injection
    CAPEC-251 Local Code Inclusion
    CAPEC-252 PHP Local File Inclusion
    CAPEC-253 Remote Code Inclusion
    CAPEC-263 Force Use of Corrupted Files
    CAPEC-384 Application API Message Manipulation via Man-in-the-Middle
    CAPEC-385 Transaction or Event Tampering via Application API Manipulation
    CAPEC-386 Application API Navigation Remapping
    CAPEC-387 Navigation Remapping To Propagate Malicious Content
    CAPEC-388 Application API Button Hijacking
    CAPEC-510 SaaS User Request Forgery
    CAPEC-538 Open-Source Library Manipulation
    CAPEC-549 Local Execution of Code
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-640 Inclusion of Code in Existing Process
    CAPEC-660 Root/Jailbreak Detection Evasion via Hooking
    CAPEC-695 Repo Jacking
    CAPEC-698 Install Malicious Extension
    CAPEC-75 Manipulating Writeable Configuration Files
    CAPEC-76 Manipulating Web Input to File System Calls
    CAPEC-89 Pharming

    Related CVEs

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    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
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    References

    http://www.securityfocus.com/bid/106168
    https://access.redhat.com/errata/RHSA-2018:3831
    https://access.redhat.com/errata/RHSA-2018:3833
    https://access.redhat.com/errata/RHSA-2019:0159
    https://access.redhat.com/errata/RHSA-2019:0160
    https://bugzilla.mozilla.org/show_bug.cgi?id=1487964
    https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
    https://security.gentoo.org/glsa/201903-04
    https://usn.ubuntu.com/3844-1/
    https://usn.ubuntu.com/3868-1/
    https://www.debian.org/security/2018/dsa-4354
    https://www.debian.org/security/2019/dsa-4362
    https://www.mozilla.org/security/advisories/mfsa2018-29/
    https://www.mozilla.org/security/advisories/mfsa2018-30/
    https://www.mozilla.org/security/advisories/mfsa2018-31/
    http://www.securityfocus.com/bid/106168
    https://access.redhat.com/errata/RHSA-2018:3831
    https://access.redhat.com/errata/RHSA-2018:3833
    https://access.redhat.com/errata/RHSA-2019:0159
    https://access.redhat.com/errata/RHSA-2019:0160
    https://bugzilla.mozilla.org/show_bug.cgi?id=1487964
    https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
    https://security.gentoo.org/glsa/201903-04
    https://usn.ubuntu.com/3844-1/
    https://usn.ubuntu.com/3868-1/
    https://www.debian.org/security/2018/dsa-4354
    https://www.debian.org/security/2019/dsa-4362
    https://www.mozilla.org/security/advisories/mfsa2018-29/
    https://www.mozilla.org/security/advisories/mfsa2018-30/
    https://www.mozilla.org/security/advisories/mfsa2018-31/

    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