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    1 vulnerability found for php-standard-library by php-standard-library

    CVE-2026-48979 (GCVE-0-2026-48979)

    Vulnerability from cvelistv5 – Published: 2026-06-17 20:43 – Updated: 2026-06-18 13:11
    VLAI
    Title
    PHP Standard Library: HTTP/2 server-side missing content-length validation enables request smuggling
    Summary
    PHP Standard Library (PSL) is set of APIs covering async, collections, networking, I/O, cryptography, terminal UI, etc. In versions 6.1.0, 6.1.1 and 6.2.0, the Psl\H2\ServerConnection does not validate that the total bytes received in DATA frames match the content-length header declared in the HEADERS frame, allowing request smuggling. This is in violation of RFC 9113 §8.1.1. A malicious client is able to send more DATA bytes than declared, smuggling additional content past application-level size limits and send fewer DATA bytes than declared and close the stream early, causing applications that trust the declared length to behave incorrectly. The vulnerability is only reachable for consumers using Psl\H2\ServerConnection directly to accept untrusted client traffic. Consumers of documented high-level PSL APIs are not affected. This issue has been fixed in versions 6.1.2 and 6.2.1.
    Severity
    7.5 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: yes Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
    Assigner
    References
    Impacted products
    Vendor Product Version
    php-standard-library php-standard-library Affected: >= 6.1.0, < 6.1.2
    Affected: >= 6.2.0, < 6.2.1
    		Create a notification for this product.
    php-standard-library php-standard-library/h2 Affected: >= 6.1.0, < 6.1.2
    Affected: >= 6.2.0, < 6.2.1
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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