Resource exhaustion in Xddxdd Bird-Lg-Go
CVE-2026-45047
bird-lg-go is a BIRD looking glass in Go. Prior to 1.4.5, the apiHandler (and similarly webHandlerTelegramBot) processes user-provided JSON payloads by directly using json.NewDecoder(r.Body).Decode(&request) without restricting the maximum read size. An unauthenticated remote attacker can stream an extremely large, endless JSON payload (e.g., several Gigabytes of padding) over a single TCP connection. Because Go's JSON decoder attempts to allocate memory for the entire parsed structure, this rapidly exhausts the host's physical RAM or container limits, leading to an unrecoverable fatal error: runtime: out of memory. This vulnerability is fixed in 1.4.5.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (45.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.001
Affected products
- Xddxdd Bird-Lg-Go — versions < 1.4.5
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-45047?
- CVE-2026-45047 is a high-severity vulnerability in Xddxdd Bird-Lg-Go, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-05-27.
- How severe is CVE-2026-45047?
- High severity. CVSS v3 base score is 7.5 out of 10.