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    CVE-2025-63938

    Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.

    Published:Nov 26, 2025
    Last Modified:Jan 2, 2026
    EPS:Nov 26, 2025
    EPSS Score:0.00039
    CVSS Score:6.5

    Affected Products

    Vendor
    Tinyproxy
    Product
    Tinyproxy
    Vendor
    Tinyproxy Project
    Product
    Tinyproxy

    Exploits

    https://github.com/tinyproxy/tinyproxy/issues/586

    Common Weakness Enumeration

    CWE-190 Integer Overflow or Wraparound

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-54388 (CVSS 9.3) — Tinyproxy through 1.11.3, fixed in commit 364cdb6, fails to reject requests containing multiple Content-Length…
    CVE-2026-54387 (CVSS 9.3) — Tinyproxy through 1.11.3, fixed in commit ff45d3b, fails to reconcile conflicting Content-Length and Transfer-…
    CVE-2026-55202 (CVSS 8.8) — Tinyproxy through 1.11.3, fixed in commit 09312a1, fails to properly validate the Host header during stathost …
    CVE-2026-3945 (CVSS 8.7) — An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and includin…
    CVE-2023-49606 (CVSS 9.8) — A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and Tinyproxy…
    CVE-2002-0847 (CVSS 7.5) — tinyproxy HTTP proxy 1.5.0, 1.4.3, and earlier allows remote attackers to execute arbitrary code via memory th…
    CVE-2001-0129 (CVSS 10) — Buffer overflow in Tinyproxy HTTP proxy 1.3.3 and earlier allows remote attackers to cause a denial of service…

    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