CVE-2026-81706

MEDIUMNVD 6.86.8
EchelonGraph scoreMEDIUM confidence

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

Score 6.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-27. NVD baseline CVSS 6.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
6.8EG
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: 6.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

openssl_encrypt before 1.4.9 fails to prevent namespace collisions between own identities and contacts in IdentityStore, allowing attackers to create shadowed contact entries invisible until the corresponding own identity is deleted. When the own identity is deleted, the shadowed contact becomes visible and resolves to the attacker's keys, enabling silent key substitution for encrypted files.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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)
Severity68% × 45%
The EG Score, 6.8 of 10.
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 low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
7th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 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 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 27, 2026

Last Modified

October 1, 2026

Advisory Details (2)

Auto-updated Aug 27, 2026
Patch available. Sources: github.
Web page

openssl_encrypt before 1.4.9 Key Substitution via Identity Shadowing | Advisories | VulnCheck

https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-key-substitution-via-identity-shadowing
GitHub advisoryMentions a patch (unverified)

Contact stored under an own identity's name silently substitutes its keys when the identity is deleted · Advisory · jahlives/openssl_encrypt · GitHub

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-8gmx-w9m8-vx7q

Vendor Advisories for CVE-2026-81706(1)

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

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
openssl-encrypt0.2.2 ... 1.4.8 (53 versions)
  • every version up to 1.4.9: fixed in 1.4.9
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 77× 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 123 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 24 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-10-12 14:56 UTCEG score recompute
  4. 2026-10-11 19:20 UTCEG score recompute
  5. 2026-10-11 16:36 UTCEG score recompute
  6. 2026-10-11 13:54 UTCEG score recompute
  7. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  9. 2026-10-10 09:47 UTCEG score recompute
  10. 2026-10-10 09:47 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  11. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  12. 2026-10-09 07:16 UTCEG score recompute
  13. 2026-10-09 07:16 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-08 04:41 UTCEG score recompute
  16. 2026-10-08 04:41 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  17. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  18. 2026-10-07 02:48 UTCEG score recompute
  19. 2026-10-07 02:48 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  20. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  21. 2026-10-06 00:54 UTCEG score recompute
  22. 2026-10-06 00:53 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  23. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  25. 2026-10-04 21:18 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
Show 74 more
  1. 2026-10-03 19:24 UTCEG score recompute
  2. 2026-10-03 19:24 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  3. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  4. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  5. 2026-10-02 17:31 UTCEG score recompute
  6. 2026-10-02 17:31 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  7. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  8. 2026-10-01 15:27 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  9. 2026-10-01 06:53 UTCEG score recompute
  10. 2026-10-01 06:53 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  11. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  12. 2026-09-30 05:00 UTCEG score recompute
  13. 2026-09-30 05:00 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  14. 2026-09-28 22:31 UTCEG score recompute
  15. 2026-09-28 22:31 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  16. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  17. 2026-09-27 20:36 UTCEG score recompute
  18. 2026-09-27 20:36 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  19. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  20. 2026-09-26 18:43 UTCEG score recompute
  21. 2026-09-26 18:43 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  22. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  23. 2026-09-25 14:13 UTCEG score recompute
  24. 2026-09-25 14:13 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  26. 2026-09-24 12:10 UTCEG score recompute
  27. 2026-09-24 12:10 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  28. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  29. 2026-09-23 10:16 UTCEG score recompute
  30. 2026-09-23 10:16 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  31. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  32. 2026-09-22 08:22 UTCEG score recompute
  33. 2026-09-22 08:22 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  34. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  35. 2026-09-21 06:29 UTCEG score recompute
  36. 2026-09-21 06:29 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  37. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  38. 2026-09-20 04:35 UTCEG score recompute
  39. 2026-09-20 04:35 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  40. 2026-09-19 02:41 UTCEG score recompute
  41. 2026-09-19 02:41 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  42. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  43. 2026-09-18 00:47 UTCEG score recompute
  44. 2026-09-18 00:47 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  45. 2026-09-16 22:53 UTCEG score recompute
  46. 2026-09-16 22:53 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  47. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  48. 2026-09-15 20:57 UTCEG score recompute
  49. 2026-09-15 20:57 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  50. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  51. 2026-09-14 18:48 UTCEG score recompute
  52. 2026-09-14 18:48 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  53. 2026-09-13 15:38 UTCEG score recompute
  54. 2026-09-13 15:38 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  55. 2026-09-12 13:45 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  56. 2026-09-11 11:51 UTCEG score recompute
  57. 2026-09-11 11:51 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  58. 2026-09-10 09:47 UTCEG score recompute
  59. 2026-09-10 09:47 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  60. 2026-09-09 07:53 UTCEG score recompute
  61. 2026-09-09 07:53 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  62. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  63. 2026-09-08 06:00 UTCEG score recompute
  64. 2026-09-08 06:00 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  65. 2026-09-07 04:05 UTCEG score recompute
  66. 2026-09-07 04:05 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  67. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  68. 2026-09-06 02:11 UTCEG score recompute
  69. 2026-09-06 02:11 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  70. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  71. 2026-09-05 00:18 UTCEG score recompute
  72. 2026-09-05 00:18 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  73. 2026-09-03 22:23 UTCGHSA enrichmentGHSA-q473-r68q-32vq · GitHub severity CRITICAL · GitHub CVSS 6.8
  74. 2026-09-02 20:29 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-81706?
CVE-2026-81706 is a medium-severity vulnerability; its CVE record was published on August 27, 2026. openssl_encrypt before 1.4.9 fails to prevent namespace collisions between own identities and contacts in IdentityStore, allowing attackers to create shadowed contact entries invisible until the corresponding own identity is deleted. When the own identity is deleted, the shadowed contact becomes…
When was CVE-2026-81706 made public?
CVE-2026-81706 was made public on August 12, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on August 27, 2026. EchelonGraph's copy of the record carries a last-modified date of October 1, 2026; the record at its source may have been updated since.
Is CVE-2026-81706 actively exploited?
CVE-2026-81706 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81706?
CVE-2026-81706 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-81706?
A fix for CVE-2026-81706 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-81706 are linked in the Vendor Advisories panel on this page.

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