CVE-2026-52684

LOWPre-NVD 3.73.7
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 3.7 from GitHub Security Advisory (severity: LOW) published 2026-07-23. A secondary CVSS source baseline 3.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-47932 (ENISA EUVD) · GHSA-j58f-rgm2-v2p8 (GitHub Security Advisories)Source: ENISA EUVD

3.7EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 3.7Exploit: None knownExposed services: Not assessed

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

The CVE record's CNA (Open-Xchange) lists PowerDNS Recursor versions before 5.5.0 as affected. No release containing a fix is confirmed on record.

If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data. This does not happen on regular resolve as then then the child records are used immediately if not expired and thus valid, or the records are expired, and in that case not used. So this case can only happen if almost expired records are used to refresh the authoritative NS records.

CVSS v3
3.7
EG Score
3.7LOWmedium confidence
EG Risk
17
EG Risk 17/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity37% × 45%
Impact severity (EG Severity): CVSS 3.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (3.7): severity, escalated by confirmed exploitation. This CVE's 3.7 is its impact severity (EG Severity), not escalated.

EG Severity
3.7 LOWCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 23, 2026

Last Modified

October 24, 2026

References (1)

Vendor Advisories for CVE-2026-52684(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 rangeFix by version rangeDependents
pdns-recursor4.4.2-3 ... 5.4.4-1 (65 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
pdns-recursor4.8.4-1 ... 5.4.6-1 (52 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
pdns-recursor5.2.11-0+deb13u1 ... 5.4.6-1 (29 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
pdns-recursor5.2.4-2 ... 5.4.6-1 (21 versions)
  • every version on: no fix on record
—

Data Freshness Timeline

(refreshed 10× in last 7d / 38× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 129 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 29 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  2. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  3. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  4. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-10-25 14:21 UTCEG score recompute
  7. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-24 13:35 UTCEG score recompute
  9. 2026-10-24 13:35 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  10. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  11. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  14. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-18 03:32 UTCEG score recompute
  16. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  19. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  20. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  21. 2026-10-12 15:58 UTCEG score recompute
  22. 2026-10-11 19:41 UTCEG score recompute
  23. 2026-10-11 16:56 UTCEG score recompute
  24. 2026-10-11 14:20 UTCEG score recompute
  25. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
Show 75 more
  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  3. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  4. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  7. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  8. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  10. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  11. 2026-10-01 12:13 UTCEG score recompute
  12. 2026-10-01 12:13 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  13. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-09-28 05:13 UTCEG score recompute
  17. 2026-09-28 05:13 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  18. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-09-22 22:54 UTCEG score recompute
  23. 2026-09-22 22:54 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  24. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  26. 2026-09-18 03:09 UTCEG score recompute
  27. 2026-09-18 03:09 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  28. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  29. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  30. 2026-09-14 16:42 UTCEG score recompute
  31. 2026-09-14 16:42 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  32. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  33. 2026-09-11 07:23 UTCEG score recompute
  34. 2026-09-11 07:23 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  35. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  37. 2026-09-07 21:38 UTCEG score recompute
  38. 2026-09-07 21:38 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  39. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  41. 2026-09-04 13:39 UTCEG score recompute
  42. 2026-09-04 13:39 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  43. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  44. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  45. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  46. 2026-08-31 03:37 UTCEG score recompute
  47. 2026-08-31 03:37 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  48. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  50. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-08-27 21:09 UTCEG score recompute
  52. 2026-08-27 21:09 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  53. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  54. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  55. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  56. 2026-08-24 14:23 UTCEG score recompute
  57. 2026-08-24 14:22 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  58. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  59. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  60. 2026-08-21 07:55 UTCEG score recompute
  61. 2026-08-21 07:55 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  62. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  63. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  64. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  65. 2026-08-18 01:28 UTCEG score recompute
  66. 2026-08-18 01:28 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  67. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  68. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  69. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  70. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  71. 2026-08-14 18:03 UTCEG score recompute
  72. 2026-08-14 18:03 UTCGHSA enrichmentGHSA-j58f-rgm2-v2p8 · GitHub severity LOW · GitHub CVSS 3.7
  73. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  74. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  75. 2026-08-11 11:36 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-52684?
CVE-2026-52684 is a low-severity vulnerability; its CVE record was published on July 23, 2026. If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data. This does not happen on regular resolve as then then the child records are used immediately if not expired and thus valid, or the records are expired, and in that case not used.…
When was CVE-2026-52684 made public?
CVE-2026-52684 was made public on July 19, 2026: that is the date its CVE record's CNA, Open-Xchange, gives for when the vulnerability was made public. The CVE record itself was published on July 23, 2026. EchelonGraph's copy of the record carries a last-modified date of October 24, 2026; the record at its source may have been updated since.
Is CVE-2026-52684 actively exploited?
CVE-2026-52684 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-52684?
CVE-2026-52684 has a CVSS base score of 3.7 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-52684?
No fix for CVE-2026-52684 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The CVE record's CNA (Open-Xchange) lists PowerDNS Recursor versions before 5.5.0 as affected. No release containing a fix is confirmed on record. The vendor advisories EchelonGraph has for CVE-2026-52684 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-52684

Explore →

Is Your Infrastructure Affected by CVE-2026-52684?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.