A flaw was found in libsoup. The libsoup soup_uri_decode_data_uri() function may crash when processing malformed data URI. This flaw allows an attacker to cause a denial of service (DoS).

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2025-941 advisory.

    A flaw was found in libsoup. The package is vulnerable to a heap buffer over-read when sniffing content     via the skip_insight_whitespace() function. Libsoup clients may read one byte out-of-bounds in response to     a crafted HTTP response by an HTTP server. (CVE-2025-2784)

    A flaw was found in libsoup. The libsoup append_param_quoted() function may contain an overflow bug     resulting in a buffer under-read. (CVE-2025-32050)

    A flaw was found in libsoup. The libsoup soup_uri_decode_data_uri() function may crash when processing     malformed data URI. This flaw allows an attacker to cause a denial of service (DoS). (CVE-2025-32051)

    A flaw was found in libsoup. A vulnerability in the sniff_unknown() function may lead to heap buffer over-     read. (CVE-2025-32052)

    A flaw was found in libsoup. A vulnerability in sniff_feed_or_html() and skip_insignificant_space()     functions may lead to a heap buffer over-read. (CVE-2025-32053)

    A flaw was found in libsoup, where the soup_headers_parse_request() function may be vulnerable to an out-     of-bound read. This flaw allows a malicious user to use a specially crafted HTTP request to crash the HTTP     server. (CVE-2025-32906)

    A flaw was found in libsoup. SoupContentSniffer may be vulnerable to a NULL pointer dereference in the     sniff_mp4 function. The HTTP server may cause the libsoup client to crash. (CVE-2025-32909)

    A flaw was found in libsoup, where soup_auth_digest_authenticate() is vulnerable to a NULL pointer     dereference. This issue may cause the libsoup client to crash. (CVE-2025-32910)

    libsoup: Double free on  soup_message_headers_get_content_disposition() through  soup-message-headers.c     via params GHashTable value (CVE-2025-32911)

    A flaw was found in libsoup, where SoupAuthDigest is vulnerable to a NULL pointer dereference. The HTTP     server may cause the libsoup client to crash. (CVE-2025-32912)

    A flaw was found in libsoup, where the soup_message_headers_get_content_disposition() function is     vulnerable to a NULL pointer dereference. This flaw allows a malicious HTTP peer to crash a libsoup client     or server that uses this function. (CVE-2025-32913)

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

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

The remote Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7432-1 advisory.

    It was discovered that libsoup could be made to read out of bounds. An attacker could possibly use this     issue to cause applications using libsoup to crash, resulting in a denial of service. (CVE-2025-2784,     CVE-2025-32050, CVE-2025-32052, CVE-2025-32053)

    It was discovered that libsoup could be made to dereference invalid memory. An attacker could possibly use     this issue to cause applications using libsoup to crash, resulting in a denial of service.
    (CVE-2025-32051)

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

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

ID	Name	Product	Family	Severity
234952	Amazon Linux 2023 : libsoup3, libsoup3-devel (ALAS2023-2025-941)	Nessus	Amazon Linux Local Security Checks	high
234139	Ubuntu 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : libsoup vulnerabilities (USN-7432-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2025-32051

medium

Tenable Plugins

high

medium