CVE-2026-2968

3.7 LOW
Published: February 23, 2026 Modified: February 23, 2026
View on NVD

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.md
Source: cna@vuldb.com
Exploit Third Party Advisory
https://vuldb.com/?ctiid.347335
Source: cna@vuldb.com
Permissions Required VDB Entry
https://vuldb.com/?id.347335
Source: cna@vuldb.com
Third Party Advisory VDB Entry
https://vuldb.com/?submit.757091
Source: cna@vuldb.com
Third Party Advisory VDB Entry

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
3.7 / 10.0
EPSS (Exploit Probability)
0.0%
1th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

cesanta