CVE Feed

    Dashboard / CVE / CVE-2021-21339

    CVE-2021-21339

    TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 user session identifiers were stored in cleartext - without processing of additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.

    Published:Mar 23, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 23, 2021
    EPSS Score:0.00132
    CVSS Score:5.9

    Affected Products

    Vendor
    Typo3
    Product
    Typo3

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-37 Retrieve Embedded Sensitive Data

    Related CVEs

    CVE-2026-77132 (CVSS 5.3) — It has been discovered that several AJAX routes used for the backend localization wizard failed to perform aut…
    CVE-2026-85400 (CVSS 7.5) — Backend administrators without system maintainer privileges were able to schedule any of the configuration:rea…
    CVE-2026-19418 (CVSS 7.3) — The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 (CVE-2020-11069) became ineffective in TYPO3 v…
    CVE-2026-15305 (CVSS 6.3) — Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements wi…
    CVE-2026-49742 (CVSS 7.1) — Backend users with file download permissions were able to download files from the fallback storage of the file…
    CVE-2026-49741 (CVSS 8.7) — Backend users with write access to the form_definition database table were able to directly create, update, or…
    CVE-2026-49740 (CVSS 6.3) — TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads …
    CVE-2026-49738 (CVSS 2.1) — The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison with…
    CVE-2026-47352 (CVSS 5.3) — Authenticated backend users were able to retrieve file metadata via several Backend API routes without proper …
    CVE-2026-47351 (CVSS 5.3) — Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read per…

    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