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CVE-2026-90698

memcached mcmc Tokenizer proto_text.c try_read_command_asciiauth out-of-bounds

CVSS 4.0 6.9 MEDIUMCVSS 3.1 5.3 MEDIUMCVSS 3.0 5.3 MEDIUMCVSS 2.0 5.0 Check source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90698

Published

A security flaw has been discovered in memcached 1.6.41/1.6.42/1.6.43. This vulnerability affects the function try_read_command_asciiauth of the file proto_text.c of the component mcmc Tokenizer. The manipulation results in out-of-bounds read. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.44 is able to resolve this issue. The patch is identified as af05c9302bba508b736c3da1d5670f63fe8b7db4. You should upgrade the affected component.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90698

Published

memcached

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "n/a",
                    "product": "memcached",
                    "versions": [
                        {
                            "version": "1.6.41",
                            "status": "affected"
                        },
                        {
                            "version": "1.6.42",
                            "status": "affected"
                        },
                        {
                            "version": "1.6.43",
                            "status": "affected"
                        },
                        {
                            "version": "1.6.44",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:2.3:a:memcached:memcached:*:*:*:*:*:*:*:*"
                    ],
                    "modules": [
                        "mcmc Tokenizer"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON