CVE-2026-2968

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-2968
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2968.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-2968
Downstream
Published
2026-02-23T03:02:07Z
Modified
2026-08-12T03:51:29Z
Severity
  • 2.9 (Low) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
Cesanta Mongoose Poly1305 Authentication Tag tls_chacha20.c mg_chacha20_poly1305_decrypt signature verification
Details

A vulnerability was detected in Cesanta Mongoose up to 7.20. This impacts the function mg_chacha20_poly1305_decrypt of the file /src/tls_chacha20.c of the component Poly1305 Authentication Tag Handler. The manipulation results in improper verification of cryptographic signature. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is said to be difficult. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Database specific 
{
    "cna_assigner": "VulDB",
    "cwe_ids": [
        "CWE-345",
        "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2968.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "7.0"
                },
                {
                    "last_affected": "7.0"
                },
                {
                    "introduced": "7.1"
                },
                {
                    "last_affected": "7.1"
                },
                {
                    "introduced": "7.2"
                },
                {
                    "last_affected": "7.2"
                },
                {
                    "introduced": "7.3"
                },
                {
                    "last_affected": "7.3"
                },
                {
                    "introduced": "7.4"
                },
                {
                    "last_affected": "7.4"
                },
                {
                    "introduced": "7.5"
                },
                {
                    "last_affected": "7.5"
                },
                {
                    "introduced": "7.6"
                },
                {
                    "last_affected": "7.6"
                },
                {
                    "introduced": "7.7"
                },
                {
                    "last_affected": "7.7"
                },
                {
                    "introduced": "7.8"
                },
                {
                    "last_affected": "7.8"
                },
                {
                    "introduced": "7.9"
                },
                {
                    "last_affected": "7.9"
                },
                {
                    "introduced": "7.10"
                },
                {
                    "last_affected": "7.10"
                },
                {
                    "introduced": "7.11"
                },
                {
                    "last_affected": "7.11"
                },
                {
                    "introduced": "7.12"
                },
                {
                    "last_affected": "7.12"
                },
                {
                    "introduced": "7.13"
                },
                {
                    "last_affected": "7.13"
                },
                {
                    "introduced": "7.14"
                },
                {
                    "last_affected": "7.14"
                },
                {
                    "introduced": "7.15"
                },
                {
                    "last_affected": "7.15"
                },
                {
                    "introduced": "7.16"
                },
                {
                    "last_affected": "7.16"
                },
                {
                    "introduced": "7.17"
                },
                {
                    "last_affected": "7.17"
                },
                {
                    "introduced": "7.18"
                },
                {
                    "last_affected": "7.18"
                },
                {
                    "introduced": "7.19"
                },
                {
                    "last_affected": "7.19"
                },
                {
                    "introduced": "7.20"
                },
                {
                    "last_affected": "7.20"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/cesanta/mongoose

Affected ranges

Type
GIT
Repo
https://github.com/cesanta/mongoose
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
236724ea2948396b4f83b68c366a169e795aa7ef
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:cesanta:mongoose:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "7.20"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

3.*
3.2
3.3
3.4
3.5
3.6
3.7
3.8
4.*
4.0
4.1
5.*
5.0
5.1
5.2
5.3
5.4
5.5
5.5_20140120
5.6
6.*
6.0
6.1
6.10
6.11
6.12
6.13
6.14
6.15
6.16
6.17
6.18
6.2
6.3
6.4
6.5
6.6
6.7
6.9
7.*
7.0
7.1
7.11
7.12
7.13
7.14
7.15
7.16
7.17
7.18
7.19
7.2
7.20
7.3
7.4
7.5
7.6
7.7
7.8

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2968.json"