CVE-2026-4712

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-03-24. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixRemediate 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: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Information disclosure in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 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 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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.4%
EPSS %ILE
31st
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-17). 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 low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days 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 low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 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 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

March 24, 2026

Last Modified

June 17, 2026

Advisory Details (5)

Auto-updated Jun 12, 2026
Patch available.
Web page

Security Vulnerabilities fixed in Thunderbird 140.9 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-24/
Web page

Security Vulnerabilities fixed in Thunderbird 149 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-23/
Web page

Security Vulnerabilities fixed in Firefox ESR 140.9 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-22/
Web page

Security Vulnerabilities fixed in Firefox 149 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-20/

Patch Availability(25)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatthunderbird-0:140.9.0-1.el8_42026-04-20redhat
redhatfirefox-0:140.9.0-1.el7_92026-04-16redhat
redhatthunderbird-0:140.9.0-1.el8_62026-04-15redhat
redhatthunderbird-0:140.9.0-1.el9_02026-04-15redhat
redhatthunderbird-0:140.9.0-1.el8_22026-04-15redhat
redhatthunderbird-0:140.9.0-1.el9_22026-04-15redhat
redhatthunderbird-0:140.9.0-1.el9_42026-04-15redhat
redhatthunderbird-0:140.9.0-1.el9_62026-04-15redhat
redhatthunderbird-0:140.9.0-1.el10_02026-04-15redhat
redhatthunderbird-0:140.9.0-1.el8_82026-04-15redhat
redhatfirefox-0:140.9.0-1.el8_42026-04-13redhat
redhatfirefox-0:140.9.0-1.el9_22026-04-13redhat
redhatfirefox-0:140.9.0-1.el8_22026-04-13redhat
redhatfirefox-0:140.9.0-1.el9_62026-04-13redhat
redhatfirefox-0:140.9.0-1.el8_82026-04-13redhat
redhatfirefox-0:140.9.0-1.el9_02026-04-13redhat
redhatfirefox-0:140.9.0-1.el8_62026-04-13redhat
redhatfirefox-0:140.9.0-1.el9_42026-04-13redhat
redhatfirefox-0:140.9.0-1.el10_02026-04-13redhat
redhatthunderbird-0:140.9.0-1.el8_102026-04-07redhat
redhatthunderbird-0:140.9.0-1.el10_12026-04-01redhat
redhatthunderbird-0:140.9.0-1.el9_72026-03-30redhat
redhatfirefox-0:140.9.0-1.el9_72026-03-26redhat
redhatfirefox-0:140.9.0-1.el8_102026-03-26redhat
redhatfirefox-0:140.9.0-1.el10_12026-03-26redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

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

Additional Vendor Advisories

(5)

Data Freshness Timeline

(refreshed 11× in last 7d / 33× 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 228 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 128 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  2. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  3. 2026-10-18 03:36 UTCEG score recompute
  4. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  5. 2026-10-17 12:56 UTCEG score recompute
  6. 2026-10-17 12:56 UTCVendor advisory
  7. 2026-10-17 12:56 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  8. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-12 16:02 UTCEG score recompute
  14. 2026-10-11 19:45 UTCEG score recompute
  15. 2026-10-11 16:59 UTCEG score recompute
  16. 2026-10-11 14:24 UTCEG score recompute
  17. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  19. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  20. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  25. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
Show 75 more
  1. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  4. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  6. 2026-09-26 00:27 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  7. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  8. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  10. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  12. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  13. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  14. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  15. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  16. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  20. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  21. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  23. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  25. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  26. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  27. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  28. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  29. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  30. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  31. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  32. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  33. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  34. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  35. 2026-08-16 10:39 UTCEG score recompute
  36. 2026-08-16 10:39 UTCVendor advisory
  37. 2026-08-16 10:39 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  38. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  39. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  40. 2026-08-14 19:41 UTCVendor advisory
  41. 2026-08-14 19:41 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  42. 2026-08-14 06:52 UTCEG score recompute
  43. 2026-08-14 06:52 UTCVendor advisory
  44. 2026-08-14 06:52 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  45. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  46. 2026-08-12 21:31 UTCEG score recompute
  47. 2026-08-12 21:31 UTCVendor advisory
  48. 2026-08-12 21:31 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  49. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  50. 2026-08-11 21:08 UTCEG score recompute
  51. 2026-08-11 21:08 UTCVendor advisory
  52. 2026-08-11 21:08 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  53. 2026-08-11 04:11 UTCEG score recompute
  54. 2026-08-11 04:11 UTCVendor advisory
  55. 2026-08-11 04:11 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  56. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  57. 2026-08-10 04:10 UTCVendor advisory
  58. 2026-08-10 04:10 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  59. 2026-08-09 17:19 UTCEG score recompute
  60. 2026-08-09 17:19 UTCVendor advisory
  61. 2026-08-09 17:19 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  62. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  63. 2026-08-09 06:27 UTCEG score recompute
  64. 2026-08-09 06:27 UTCVendor advisory
  65. 2026-08-09 06:27 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  66. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  67. 2026-08-08 03:41 UTCVendor advisory
  68. 2026-08-08 03:41 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-08-07 16:48 UTCEG score recompute
  70. 2026-08-07 16:48 UTCVendor advisory
  71. 2026-08-07 16:48 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  72. 2026-08-06 19:05 UTCEG score recompute
  73. 2026-08-06 19:05 UTCVendor advisory
  74. 2026-08-06 19:05 UTCGHSA enrichmentGHSA-vcpc-fv28-ppg5 · GitHub severity HIGH · GitHub CVSS 7.5
  75. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile

Frequently asked(5)

What is CVE-2026-4712?
CVE-2026-4712 is a high-severity vulnerability; its CVE record was published on March 24, 2026. Information disclosure in the Widget: Cocoa component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
When was the CVE record for CVE-2026-4712 published?
The CVE record for CVE-2026-4712 was published on March 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-4712 actively exploited?
CVE-2026-4712 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-4712?
CVE-2026-4712 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-4712?
A fix for CVE-2026-4712 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-4712 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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