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    CVE-2026-47729

    Squid is a caching proxy for the Web. Prior to 7.6, due to an improper validation of syntactic correctness of input in the FTP gateway (src/clients/FtpGateway.cc), Squid is vulnerable to an out-of-bounds read: when a listing entry date in the TypeA or TypeB directory-listing formats is not followed by a filename, parsing was not restricted to the input buffer, so a trusted client accessing a misbehaving FTP server through Squid's gateway feature could read memory from random unrelated transactions. This issue is fixed in version 7.6.

    Published:Jun 23, 2026
    Last Modified:Jul 17, 2026
    EPS:Jul 16, 2026
    EPSS Score:0.01907
    CVSS Score:6.5

    Affected Products

    Vendor
    Squid-cache
    Product
    Squid

    Exploits

    https://github.com/0xBlackash/CVE-2026-47729

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2025-59362 (CVSS 4) — Squid through 7.1 mishandles ASN.1 encoding of long SNMP OIDs. This occurs in asn_build_objid in lib/snmplib/a…
    CVE-2025-54574 (CVSS 9.3) — Squid is a caching proxy for the Web. In versions 6.3 and below, Squid is vulnerable to a heap buffer overflow…
    CVE-2024-45802 (CVSS 7.5) — Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to Input Validati…
    CVE-2024-37894 (CVSS 6.3) — Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Out-of-bounds Write erro…
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    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