CVE catalog

CVE-2026-52688

RRSIGs with too few labels can lead to bypass of…

[CVE catalog]

RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation

Severity
High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
Source
[NVD] · [CVE record]
EPSS
0.18% · Oct 27, 2026

Projects and upstream resources

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [
    {
      "name": "pdns-recursor",
      "status": "fixed",
      "release": "sid",
      "version": "5.4.9-1"
    },
    {
      "name": "pdns-recursor",
      "status": "fixed",
      "release": "forky",
      "version": "5.4.8-1"
    },
    {
      "name": "pdns-recursor",
      "status": "fixed",
      "release": "trixie",
      "version": "5.2.13-0+deb13u1"
    },
    {
      "name": "pdns-recursor",
      "status": "fixed",
      "release": "trixie-security",
      "version": "5.2.13-0+deb13u1"
    },
    {
      "name": "pdns-recursor",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "4.8.8-1+deb12u1"
    },
    {
      "name": "pdns-recursor",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "4.8.8-1+deb12u1"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "pdns-recursor",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": "5.4.4-1"
    },
    {
      "bug": null,
      "name": "pdns-recursor",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": "5.4.4-1"
    },
    {
      "bug": null,
      "name": "pdns-recursor",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": "5.2.12-0+deb13u1"
    },
    {
      "bug": null,
      "name": "pdns-recursor",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "end-of-life",
      "fixed_version": ""
    }
  ],
  "distribution_packages": []
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [pdns-recursor]Unknown
    Details (4)

    • 4.8.8-1+deb12u1 · amd64 · bookworm

      Affected

      nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12

    • 4.8.8-1+deb12u1 · arm64 · bookworm

      Affected

      nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12

    • 4.8.8-1+deb12u1 · amd64 · bookworm-security

      Affected

      nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12

    • 4.8.8-1+deb12u1 · arm64 · bookworm-security

      Affected

      nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12

[Debian 13 (Trixie)]

  • [pdns-recursor]Unknown
    Details (4)

    • 5.2.11-0+deb13u1 · amd64 · trixie

      Affected · Fixed: 5.2.12-0+deb13u1

      nvd · pdns-recursor · debian · 13

    • 5.2.11-0+deb13u1 · arm64 · trixie

      Affected · Fixed: 5.2.12-0+deb13u1

      nvd · pdns-recursor · debian · 13

    • 5.2.13-0+deb13u1 · amd64 · trixie-security

      Fixed · Fixed: 5.2.12-0+deb13u1

      nvd · pdns-recursor · debian · 13

    • 5.2.13-0+deb13u1 · arm64 · trixie-security

      Fixed · Fixed: 5.2.12-0+deb13u1

      nvd · pdns-recursor · debian · 13

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]