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High 7.5Published Apr 22, 2026
CVE-2026-33256An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service.
Updated under an hour ago ()
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It affects powerdns recursor. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
powerdns recursor powerdns:recursor | from 5.2.0 before 5.2.9; from 5.3.0 before 5.3.6; 5.4.0 | NVD |
References
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.htmlbroken-link, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.