CVE-2026-52690

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

Score 5.9 from GitHub Security Advisory published 2026-06-25. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
27%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

References (1)

Vendor Advisories for CVE-2026-52690(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor4.4.2-3 ... 5.4.4-1 (65 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor4.8.4-1 ... 5.4.5-1 (51 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor5.2.4-2 ... 5.2.9-0+deb13u1 (7 versions)5.2.11-0+deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
pdns-recursor5.2.4-2 ... 5.4.2-2 (17 versions)5.4.3-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 5× in last 7d / 50× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 162 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 16:01 UTCEPSS rescore
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-04 05:06 UTCEPSS rescore
  7. 2026-09-02 14:12 UTCEPSS rescore
  8. 2026-09-01 13:54 UTCEPSS rescore
  9. 2026-09-01 04:40 UTCEPSS rescore
  10. 2026-08-30 19:35 UTCEG score recompute
  11. 2026-08-30 19:35 UTCGHSA enrichment
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 01:22 UTCEPSS rescore
  14. 2026-08-28 21:41 UTCEPSS rescore
  15. 2026-08-27 23:56 UTCEG score recompute
  16. 2026-08-27 23:56 UTCGHSA enrichment
  17. 2026-08-27 14:25 UTCEPSS rescore
  18. 2026-08-26 14:46 UTCEPSS rescore
  19. 2026-08-25 13:49 UTCEPSS rescore
  20. 2026-08-24 13:11 UTCEG score recompute
  21. 2026-08-24 13:11 UTCGHSA enrichment
  22. 2026-08-23 10:27 UTCEG score recompute
  23. 2026-08-23 10:27 UTCGHSA enrichment
  24. 2026-08-23 00:19 UTCEPSS rescore
  25. 2026-08-22 10:38 UTCEG score recompute
Show 75 more
  1. 2026-08-22 10:38 UTCGHSA enrichment
  2. 2026-08-21 23:49 UTCEPSS rescore
  3. 2026-08-21 06:35 UTCEG score recompute
  4. 2026-08-21 06:35 UTCGHSA enrichment
  5. 2026-08-20 22:55 UTCEPSS rescore
  6. 2026-08-20 07:05 UTCEG score recompute
  7. 2026-08-20 07:05 UTCGHSA enrichment
  8. 2026-08-19 17:04 UTCEPSS rescore
  9. 2026-08-19 01:29 UTCEG score recompute
  10. 2026-08-19 01:29 UTCGHSA enrichment
  11. 2026-08-18 13:48 UTCEPSS rescore
  12. 2026-08-17 16:57 UTCEG score recompute
  13. 2026-08-17 16:57 UTCGHSA enrichment
  14. 2026-08-17 13:47 UTCEPSS rescore
  15. 2026-08-16 17:03 UTCEG score recompute
  16. 2026-08-16 17:03 UTCGHSA enrichment
  17. 2026-08-16 14:56 UTCEPSS rescore
  18. 2026-08-16 02:14 UTCEPSS rescore
  19. 2026-08-15 17:33 UTCEG score recompute
  20. 2026-08-15 17:33 UTCGHSA enrichment
  21. 2026-08-15 01:30 UTCEPSS rescore
  22. 2026-08-14 18:02 UTCEG score recompute
  23. 2026-08-14 18:02 UTCGHSA enrichment
  24. 2026-08-13 22:00 UTCEPSS rescore
  25. 2026-08-13 18:31 UTCGHSA enrichment
  26. 2026-08-12 18:22 UTCEG score recompute
  27. 2026-08-12 18:22 UTCGHSA enrichment
  28. 2026-08-12 13:51 UTCEPSS rescore
  29. 2026-08-11 18:48 UTCEG score recompute
  30. 2026-08-11 18:48 UTCGHSA enrichment
  31. 2026-08-11 00:00 UTCEPSS rescore
  32. 2026-08-10 19:18 UTCGHSA enrichment
  33. 2026-08-09 19:47 UTCEG score recompute
  34. 2026-08-09 19:47 UTCGHSA enrichment
  35. 2026-08-09 13:46 UTCEPSS rescore
  36. 2026-08-08 20:17 UTCEG score recompute
  37. 2026-08-08 20:17 UTCGHSA enrichment
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-07 20:46 UTCEG score recompute
  40. 2026-08-07 20:46 UTCGHSA enrichment
  41. 2026-08-06 21:15 UTCEG score recompute
  42. 2026-08-06 21:15 UTCGHSA enrichment
  43. 2026-08-06 13:47 UTCEPSS rescore
  44. 2026-08-05 21:45 UTCEG score recompute
  45. 2026-08-05 21:45 UTCGHSA enrichment
  46. 2026-08-05 19:17 UTCEPSS rescore
  47. 2026-08-04 22:15 UTCEG score recompute
  48. 2026-08-04 22:15 UTCGHSA enrichment
  49. 2026-08-04 15:10 UTCEPSS rescore
  50. 2026-08-04 10:39 UTCEPSS rescore
  51. 2026-08-03 22:35 UTCEG score recompute
  52. 2026-08-03 22:35 UTCGHSA enrichment
  53. 2026-08-03 10:36 UTCEPSS rescore
  54. 2026-08-02 23:05 UTCEG score recompute
  55. 2026-08-02 23:05 UTCGHSA enrichment
  56. 2026-08-02 02:27 UTCEPSS rescore
  57. 2026-08-01 23:34 UTCEG score recompute
  58. 2026-08-01 23:34 UTCGHSA enrichment
  59. 2026-08-01 04:16 UTCEPSS rescore
  60. 2026-08-01 00:03 UTCGHSA enrichment
  61. 2026-07-31 00:30 UTCEG score recompute
  62. 2026-07-31 00:30 UTCGHSA enrichment
  63. 2026-07-30 16:28 UTCEPSS rescore
  64. 2026-07-30 01:30 UTCEPSS rescore
  65. 2026-07-30 00:51 UTCGHSA enrichment
  66. 2026-07-28 21:14 UTCEG score recompute
  67. 2026-07-28 21:14 UTCGHSA enrichment
  68. 2026-07-28 15:37 UTCEPSS rescore
  69. 2026-07-27 17:24 UTCEG score recompute
  70. 2026-07-27 17:24 UTCGHSA enrichment
  71. 2026-07-26 15:06 UTCEG score recompute
  72. 2026-07-26 15:06 UTCGHSA enrichment
  73. 2026-07-26 14:54 UTCEPSS rescore
  74. 2026-07-25 14:18 UTCEPSS rescore
  75. 2026-07-24 14:18 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-52690?
CVE-2026-52690 is a medium vulnerability published on June 25, 2026. Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.
When was CVE-2026-52690 disclosed?
CVE-2026-52690 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-52690 actively exploited?
CVE-2026-52690 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.0% of all scored CVEs.
What is the CVSS score of CVE-2026-52690?
CVE-2026-52690 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-52690?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-52690, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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