CVE-2026-66648

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-24. A secondary CVSS source baseline 9.8; 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
9.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.8Exploit: None knownExposed services: Not assessed

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

Unauthenticated Privilege Escalation in Jawn <= 1.4.2 versions.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

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 (value × EchelonGraph’s weight)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
39th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

August 24, 2026

Last Modified

August 24, 2026

Advisory Details (1)

Auto-updated Oct 5, 2026
No fix on record yet.
Web pageMentions a patch (unverified)

Privilege Escalation in WordPress Jawn Theme - Patchstack

https://patchstack.com/database/wordpress/theme/jawn/vulnerability/wordpress-jawn-theme-1-4-2-privilege-escalation-vulnerability?_s_id=cve

Vendor Advisories for CVE-2026-66648(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 30× in last 7d / 184× 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 331 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 231 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-12 06:02 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-11 19:31 UTCEG score recompute
  3. 2026-10-11 16:46 UTCEG score recompute
  4. 2026-10-11 14:07 UTCEG score recompute
  5. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  6. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-10-10 13:08 UTCEG score recompute
  8. 2026-10-10 13:08 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-10-09 04:59 UTCEG score recompute
  11. 2026-10-09 04:59 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-10-08 08:19 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-08 04:05 UTCEG score recompute
  15. 2026-10-08 04:04 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-07 08:58 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-10-07 05:05 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-10-07 01:11 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-06 20:49 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-06 16:41 UTCEG score recompute
  22. 2026-10-06 16:41 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-10-06 12:05 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  25. 2026-10-06 07:46 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
Show 75 more
  1. 2026-10-06 02:53 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-05 17:43 UTCEG score recompute
  3. 2026-10-05 17:43 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  5. 2026-10-05 13:49 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-10-05 09:22 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-05 05:22 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-05 01:28 UTCEG score recompute
  9. 2026-10-05 01:28 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-04 20:43 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-10-04 14:40 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-04 10:07 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-04 06:14 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-04 02:20 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-03 20:26 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-03 16:33 UTCEG score recompute
  18. 2026-10-03 16:33 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-03 04:33 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-03 00:37 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  22. 2026-10-02 18:54 UTCEG score recompute
  23. 2026-10-02 18:54 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-02 14:57 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  26. 2026-10-02 11:03 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  27. 2026-10-02 06:43 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  28. 2026-10-02 01:19 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  29. 2026-10-01 21:04 UTCEG score recompute
  30. 2026-10-01 21:04 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  31. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  32. 2026-10-01 13:26 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  33. 2026-10-01 09:32 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  34. 2026-10-01 05:38 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  35. 2026-10-01 01:09 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  36. 2026-09-30 20:19 UTCEG score recompute
  37. 2026-09-30 20:19 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  38. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-09-30 11:46 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  40. 2026-09-30 07:16 UTCEG score recompute
  41. 2026-09-30 07:16 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  42. 2026-09-29 15:15 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  43. 2026-09-29 05:36 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  44. 2026-09-29 01:42 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  45. 2026-09-28 21:33 UTCEG score recompute
  46. 2026-09-28 21:33 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  47. 2026-09-28 14:03 UTCEG score recompute
  48. 2026-09-28 14:03 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  49. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  50. 2026-09-28 10:08 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  51. 2026-09-28 06:13 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  52. 2026-09-28 02:19 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-09-27 22:26 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  54. 2026-09-27 18:32 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  55. 2026-09-27 14:33 UTCEG score recompute
  56. 2026-09-27 14:33 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  57. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  58. 2026-09-27 09:45 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  59. 2026-09-27 05:52 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  60. 2026-09-27 00:42 UTCEG score recompute
  61. 2026-09-27 00:42 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  62. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  63. 2026-09-25 16:52 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  64. 2026-09-25 12:08 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  65. 2026-09-25 08:14 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  66. 2026-09-25 04:20 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  67. 2026-09-25 00:27 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  68. 2026-09-24 19:31 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  69. 2026-09-24 15:37 UTCEG score recompute
  70. 2026-09-24 15:37 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  71. 2026-09-24 11:44 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  72. 2026-09-24 07:50 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  73. 2026-09-24 03:57 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  74. 2026-09-23 23:53 UTCGHSA enrichmentGHSA-mww2-cm7j-fqfv · GitHub severity CRITICAL · GitHub CVSS 9.8
  75. 2026-09-23 19:59 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-66648?
CVE-2026-66648 is a critical-severity vulnerability; its CVE record was published on August 24, 2026. Unauthenticated Privilege Escalation in Jawn <= 1.4.2 versions.
When was the CVE record for CVE-2026-66648 published?
The CVE record for CVE-2026-66648 was published on August 24, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 24, 2026; the record at its source may have been updated since.
Is CVE-2026-66648 actively exploited?
CVE-2026-66648 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (39th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-66648?
CVE-2026-66648 has a CVSS base score of 9.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-66648?
No fix for CVE-2026-66648 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 vendor advisories EchelonGraph has for CVE-2026-66648 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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