CVE-2026-82477

MEDIUMPre-NVD 5.85.8
EchelonGraph scoreMEDIUM confidence

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

Score 5.8 from GitHub Security Advisory published 2026-08-29. A secondary CVSS source baseline 5.8; 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 weekElevated

Also known asEUVD-2026-68115 (ENISA EUVD) · GHSA-mgq6-mc59-8j8m (GitHub Security Advisories)Source: ENISA EUVD

5.8EG
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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 5.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

In MITRE SAF Heimdall 2.11.6 through 2.13.x before 2.14.0, an SSRF issue allows remote attackers to access internal network resources via the Tenable proxy endpoint. This occurs in apps/backend/src/tenable/tenable.controller.ts.

CVSS v3
5.8
EG Score
5.8MEDIUMmedium confidence
EG Risk
57
EG Risk 57/100

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)
Severity58% × 45%
Impact severity (EG Severity): CVSS 5.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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
0.5%
EPSS %ILE
40th
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 (5.8): severity, escalated by confirmed exploitation. This CVE's 5.8 is its impact severity (EG Severity), not escalated.

EG Severity
5.8 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.5% 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 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 public PoC (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

August 29, 2026

Last Modified

September 1, 2026

Advisory Details (2)

Auto-updated Aug 29, 2026
Patch available. Sources: github_commit, github_release.
GitHub release Patch Available

v2.14.0

Patch available: mitre/heimdall2 v2.14.0

https://github.com/mitre/heimdall2/releases/tag/v2.14.0
GitHub commit

commit b6a9cdb4fc01 (mitre/heimdall2)

Fix landed in mitre/heimdall2 commit b6a9cdb4fc01 — awaiting tagged release

https://github.com/mitre/heimdall2/commit/b6a9cdb4fc01f96aaa1a77cc27d1d449b485937b

Vendor Advisories for CVE-2026-82477(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 10× in last 7d / 62× 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 99 of 148 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 49 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-25 13:58 UTCEG score recompute
  4. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  6. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  7. 2026-10-22 13:43 UTCEG score recompute
  8. 2026-10-22 13:43 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  9. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  11. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  12. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-10-18 03:08 UTCEG score recompute
  14. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-12 14:55 UTCEG score recompute
  21. 2026-10-11 19:19 UTCEG score recompute
  22. 2026-10-11 16:36 UTCEG score recompute
  23. 2026-10-11 13:54 UTCEG score recompute
  24. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
Show 74 more
  1. 2026-10-10 00:45 UTCEG score recompute
  2. 2026-10-10 00:45 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  3. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  4. 2026-10-09 02:34 UTCEG score recompute
  5. 2026-10-09 02:34 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  6. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  7. 2026-10-08 00:46 UTCEG score recompute
  8. 2026-10-08 00:45 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  9. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  10. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  11. 2026-10-06 15:01 UTCEG score recompute
  12. 2026-10-06 15:01 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  14. 2026-10-05 17:18 UTCEG score recompute
  15. 2026-10-05 17:18 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  16. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  17. 2026-10-04 19:35 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  18. 2026-10-03 20:04 UTCEG score recompute
  19. 2026-10-03 20:03 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  20. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  21. 2026-10-02 22:19 UTCEG score recompute
  22. 2026-10-02 22:19 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  23. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  24. 2026-10-02 00:36 UTCEG score recompute
  25. 2026-10-02 00:36 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  26. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  27. 2026-10-01 02:11 UTCEG score recompute
  28. 2026-10-01 02:11 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  29. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  30. 2026-09-30 04:17 UTCEG score recompute
  31. 2026-09-30 04:17 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  32. 2026-09-29 06:20 UTCEG score recompute
  33. 2026-09-29 06:20 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  34. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  35. 2026-09-28 08:38 UTCEG score recompute
  36. 2026-09-28 08:38 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  37. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  38. 2026-09-27 10:55 UTCEG score recompute
  39. 2026-09-27 10:55 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  40. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  41. 2026-09-26 13:03 UTCEG score recompute
  42. 2026-09-26 13:03 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  43. 2026-09-25 11:42 UTCEG score recompute
  44. 2026-09-25 11:42 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  45. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 38th percentile
  46. 2026-09-24 13:48 UTCEG score recompute
  47. 2026-09-24 13:48 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  48. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  49. 2026-09-23 16:04 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  50. 2026-09-22 18:15 UTCEG score recompute
  51. 2026-09-22 18:15 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  52. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  53. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  54. 2026-09-21 19:26 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  55. 2026-09-20 21:44 UTCEG score recompute
  56. 2026-09-20 21:44 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  57. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  58. 2026-09-20 00:01 UTCEG score recompute
  59. 2026-09-20 00:01 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  60. 2026-09-19 02:18 UTCEG score recompute
  61. 2026-09-19 02:18 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  62. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  63. 2026-09-18 04:36 UTCEG score recompute
  64. 2026-09-18 04:36 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  65. 2026-09-17 06:53 UTCEG score recompute
  66. 2026-09-17 06:53 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  67. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 28th percentile
  68. 2026-09-16 09:10 UTCEG score recompute
  69. 2026-09-16 09:10 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  70. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  71. 2026-09-15 11:04 UTCEG score recompute
  72. 2026-09-15 11:04 UTCGHSA enrichmentGHSA-mgq6-mc59-8j8m · GitHub CVSS 5.8
  73. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  74. 2026-09-14 12:40 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-82477?
CVE-2026-82477 is a medium-severity vulnerability; its CVE record was published on August 29, 2026. In MITRE SAF Heimdall 2.11.6 through 2.13.x before 2.14.0, an SSRF issue allows remote attackers to access internal network resources via the Tenable proxy endpoint. This occurs in apps/backend/src/tenable/tenable.controller.ts.
When was the CVE record for CVE-2026-82477 published?
The CVE record for CVE-2026-82477 was published on August 29, 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 September 1, 2026; the record at its source may have been updated since.
Is CVE-2026-82477 actively exploited?
CVE-2026-82477 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82477?
CVE-2026-82477 has a CVSS base score of 5.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82477?
A fix for CVE-2026-82477 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-82477 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-82477

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