CVE-2026-2968

LOW EPSS 12.2%
Published Feb 23, 20264mo ago · Modified Jun 17, 20262w ago
2.9 CVSS 4.0
Low
Find Similar
Published Feb 23, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
2.9
Exploitability
—
Impact
—
Vector string
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
12.2% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-345
CWE-347

Affected Products 1

VendorProductVersionRange
cesantamongoose* ≤7.20

References 5

  • github.com https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.md
    ExploitThird Party Advisory
  • github.com https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.md#poc
    ExploitThird Party Advisory
  • vuldb.com https://vuldb.com/?ctiid.347335
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.347335
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.757091
    Third Party AdvisoryVDB Entry

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.