Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.names.dns.DNSDatagramProtocol accepts a UDP DNS response for a pending query when its 16-bit transaction ID matches but does not verify that the response came from the queried host and port. An attacker able to deliver a packet to the resolver's listening port with the correct transaction ID can inject a forged answer. The standard twisted.names.client.Resolver uses a new random source port for each query, increasing off-path attack complexity, while applications that reuse a DNSDatagramProtocol instance expose only the transaction-ID search space after the first query. A successful forgery can redirect hostname resolution and enable mail interception, server-side request forgery, or man-in-the-middle positioning. This issue is fixed in version 26.10.0rc1.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:5215-1 advisory.

    - CVE-2026-83813: DNS spoofing in `twisted.names` due to missing source address validation (bsc#1287833).
    - CVE-2026-106454: ReDoS due to improper use of `re.compile()` in `wildcardToRegexp()` (bsc#1284420).
    - CVE-2026-115774: denial of service via negative size in IMAP search command (bsc#1287671).
    - CVE-2026-115775: denial of service via memory exhaustion in XML stream parser (bsc#1287675).
    - CVE-2026-115776: denial of service via unbounded IRC buffer (bsc#1287676).
    - CVE-2026-115778: denial of service via memory exhaustion during Telnet negotiation (bsc#1287678).
    - CVE-2026-115877: HTTP request smuggling due to improper header delimiter handling (bsc#1287848).

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

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to
    26.10.0rc1, twisted.names.dns.DNSDatagramProtocol accepts a UDP DNS response for a pending query when its
    16-bit transaction ID matches but does not verify that the response came from the queried host and port.
    An attacker able to deliver a packet to the resolver's listening port with the correct transaction ID can
    inject a forged answer. The standard twisted.names.client.Resolver uses a new random source port for each
    query, increasing off-path attack complexity, while applications that reuse a DNSDatagramProtocol instance
    expose only the transaction-ID search space after the first query. A successful forgery can redirect
    hostname resolution and enable mail interception, server-side request forgery, or man-in-the-middle
    positioning. This issue is fixed in version 26.10.0rc1. (CVE-2026-83813)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to     26.10.0rc1, twisted.names.dns.DNSDatagramProtocol accepts a UDP DNS response for a pending query when its     16-bit transaction ID matches but does not verify that the response came from the queried host and port.
    An attacker able to deliver a packet to the resolver's listening port with the correct transaction ID can     inject a forged answer. The standard twisted.names.client.Resolver uses a new random source port for each     query, increasing off-path attack complexity, while applications that reuse a DNSDatagramProtocol instance     expose only the transaction-ID search space after the first query. A successful forgery can redirect     hostname resolution and enable mail interception, server-side request forgery, or man-in-the-middle     positioning. This issue is fixed in version 26.10.0rc1. (CVE-2026-83813)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
381002	SUSE SLED15: python311-Twisted / python311-Twisted-all_non_platform / etc (SUSE-SU-2026:5215-1)	Nessus	SuSE Local Security Checks	Local	high
478043	Chainguard: synapse: security update to 1.164.1-r2	Tenable Cloud Security	Chainguard Local Security Checks	Local	low
478043	Chainguard: synapse: security update to 1.164.1-r2	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	low
477622	SCA: security update for Twisted (GHSA-jj36-9pvh-vj5r)	Tenable Cloud Security	SCA Checks	Local	low
477622	SCA: security update for Twisted (GHSA-jj36-9pvh-vj5r)	Tenable Self-Hosted Container Security	SCA Checks	Local	low
371719	Linux Distros Unpatched Vulnerability : CVE-2026-83813	Nessus	Misc.	Local	low

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