CVE-2026-2968
Last modified
CVE-2026-2968 is a low-severity vulnerability rated 2.9/10 on the CVSS scale. 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. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cesanta | Mongoose | <= 7.20 |
References
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.mdExploit, Third Party Advisory
- https://github.com/dwBruijn/CVEs/blob/main/Mongoose/ChaCha20Poly1305.md#pocExploit, Third Party Advisory
- https://vuldb.com/?ctiid.347335Permissions Required, VDB Entry
- https://vuldb.com/?id.347335Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.757091Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Analyzed
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