CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NCVE-2026-54345
Medium (6.9) in gopacket gopacket. EPSS 0.8% chance of exploitation in the next 30 days. Fixed in github.com/gopacket/gopacket 1.6.1.
gopacket provides packet processing capabilities for Go. In version 1.6.0 and earlier, the Diameter AVP decoder computes an AVP data length by subtracting a fixed header size from an attacker-controlled AVP Length field, so a vendor-flagged AVP whose Length is smaller than the 12-byte header underflows the unsigned 32-bit value and drives an unbounded allocation of roughly 4 GiB, and two such messages in succession OOM-kill a collector, causing an unauthenticated remote denial of service. This issue is fixed in version 1.6.1.
Severity
CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 56% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-191, CWE-770
- Published
- Modified
- Record from
- the NVD, synced
Affected
- gopacket:gopacket
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-6r28-9ppf-4hj5 | Go | github.com/gopacket/gopacket | <1.6.1 | 1.6.1 |
| GO-2026-6121 | Go | github.com/gopacket/gopacket | <1.6.1 | 1.6.1 |