MEDIUM🇵🇱 Wersja polska

CVE-2026-50045

CVSS 5.3v3.1pub. 2026-07-22upd. 2026-07-24

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, a single client query for a deeply nested name under a DNSSEC-signed parent can cause Unbound to send more upstream packets per client query than the configured 'max-global-quota'. This effectively bypasses a security configuration that limits upstream amplification traffic.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  • Nlnetlabs Unbound

    APP
    Nlnetlabs
    1.22.0 – 1.25.2 (excl.)
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References

Related vulnerabilities

CVE-2026-33278CRITICAL9.1PL ✓same product

Use-after-free w validatorze DNSSEC Unbound — RCE i DoS

CVE-2019-25034CRITICAL9.8PL ✓same product

Integer overflow w Unbound przed 1.9.5 prowadzący do zapisu poza buforem

CVE-2019-25032CRITICAL9.8PL ✓same product

Integer overflow w alokatorze regionalnym Unbound DNS (przed wersją 1.9.5)

CVE-2019-25033CRITICAL9.8PL ✓same product

Integer overflow w Unbound przed wersją 1.9.5 (makro ALIGN_UP)

CVE-2019-25035CRITICAL9.8PL ✓same product

Out-of-bounds write w Unbound przed wersją 1.9.5 (sldns_bget_token_par)