The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4199 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-4199-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Santiago Ruano Rincn     May 31, 2025                                  https://wiki.debian.org/LTS
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    Package        : tcpdf     Version        : 6.3.5+dfsg1-1+deb11u1     CVE ID         : CVE-2024-22640 CVE-2024-22641 CVE-2024-32489 CVE-2024-51058                      CVE-2024-56519 CVE-2024-56520 CVE-2024-56522 CVE-2024-56527

    Multiple security issues were discovered in TCPDF, a PHP class for     generating PDF files on-the-fly, which may result in denial of service,     cross-site scripting or information disclosure.

    CVE-2024-22640

        ReDoS (Regular Expression Denial of Service) if parsing an untrusted HTML         page with a crafted color.

    CVE-2024-22641

        ReDoS (Regular Expression Denial of Service) when parsing a specially         crafted SVG file.

    CVE-2024-32489

        TCPDF mishandles calls that use HTML syntax.

    CVE-2024-51058

        Local File Inclusion (LFI) vulnerability through the <img> src tag.

    CVE-2024-56519

        setSVGStyles does not sanitize the SVG font-family attribute.

    CVE-2024-56520

        TCPDF, throught its use of tc-lib-pdf-font, mishandles fonts like FontBBox         for Type 1 and misparses TrueType fonts.

    CVE-2024-56522

        The unserializeTCPDFtag() function doesn't make use of constant-time         function to compare TCPDF tag hashes.

    CVE-2024-56527

        The Error() function lacks an htmlspecialchars call for the error message.

    For Debian 11 bullseye, these problems have been fixed in version     6.3.5+dfsg1-1+deb11u1.

    We recommend that you upgrade your tcpdf packages.

    For the detailed security status of tcpdf please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/tcpdf

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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Debian dla-4199 : php-tcpdf - security update

medium Nessus Plugin ID 237717

Version 1.1