CVE catalog
CVE-2023-26437
pdns-recursor: CVE-2023-26437
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.59% · Oct 25, 2026
Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | pdns-recursor | sid | 5.4.9-1 | fixed |
| Debian | pdns-recursor | forky | 5.4.8-1 | fixed |
| Debian | pdns-recursor | trixie | 5.2.13-0+deb13u1 | fixed |
| Debian | pdns-recursor | trixie-security | 5.2.13-0+deb13u1 | fixed |
| Debian | pdns-recursor | bookworm | 4.8.8-1+deb12u1 | fixed |
| Debian | pdns-recursor | bookworm-security | 4.8.8-1+deb12u1 | fixed |
| Suse | pdns-recursor | package hub 15 sp5 | 4.8.6-bp155.2.3.1 | fixed |
| Opensuse | pdns-recursor | leap 15.5 | 4.8.6-bp155.2.3.1 | fixed |
| Suse | pdns-recursor | package hub 15 sp4 | 4.6.6-bp154.2.6.1 | fixed |
| Opensuse | pdns-recursor | leap 15.4 | 4.6.6-bp154.2.6.1 | fixed |
| Opensuse | pdns-recursor | tumbleweed | 4.8.4-1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pdns-recursor | source | sid | 4.8.4-1 | not yet assigned | Not reported | [1033941] |
| Debian | pdns-recursor | source | forky | 4.8.4-1 | not yet assigned | Not reported | [1033941] |
| Debian | pdns-recursor | source | trixie | 4.8.4-1 | not yet assigned | Not reported | [1033941] |
| Debian | pdns-recursor | source | bookworm | 4.8.4-1 | not yet assigned | Not reported | [1033941] |
| Suse | pdns-recursor | rpm | package hub 15 sp5 | 4.8.6-bp155.2.3.1 | Not reported | OPENSUSE-SU-2024:0048-1 | Not reported |
| Opensuse | pdns-recursor | rpm | leap 15.5 | 4.8.6-bp155.2.3.1 | Not reported | OPENSUSE-SU-2024:0048-1 | Not reported |
| Suse | pdns-recursor | rpm | package hub 15 sp4 | 4.6.6-bp154.2.6.1 | Not reported | OPENSUSE-SU-2023:0101-1 | Not reported |
| Opensuse | pdns-recursor | rpm | leap 15.4 | 4.6.6-bp154.2.6.1 | Not reported | OPENSUSE-SU-2023:0101-1 | Not reported |
| Opensuse | pdns-recursor | rpm | tumbleweed | 4.8.4-1.1 | Not reported | OPENSUSE-SU-2024:12838-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2023_0101-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-26437]
- [https://osv.dev/vulnerability/openSUSE-SU-2023:0101-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:0048-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:12838-1]
- [https://security-tracker.debian.org/tracker/CVE-2023-26437]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-0794.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]