CVE-2023-34340

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2023-06-21. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3

Also known asEUVD-2023-1824 (ENISA EUVD) · GHSA-hp5w-w29m-vg63 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
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).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.4%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Improper Authentication vulnerability in Apache Software Foundation Apache Accumulo. This issue affects Apache Accumulo: 2.1.0.

Accumulo 2.1.0 contains a defect in the user authentication process that may succeed when invalid credentials are provided. Users are advised to upgrade to 2.1.1.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
60
EG Risk 60/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation1.4% × 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 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 at low or medium mission impact and sooner than that at high.
EPSS PROB
1.4%
EPSS %ILE
73rd
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
1.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). 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: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: 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 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.

The score's inputs: 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

June 21, 2023

Last Modified

November 21, 2024

Advisory Details (2)

Auto-updated Oct 10, 2026
Patch available.

Vendor Advisories for CVE-2023-34340(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
mavenorg.apache.accumulo:accumulo-shell @ 2.1.1 (fixes = 2.1.0)—ghsa

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.

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
org.apache.accumulo:accumulo-shell2.1.0
  • 2.1.0 up to 2.1.1: fixed in 2.1.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 44× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 270 rows on record for this CVE, as 99 entries (1 repeat merged).

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 170 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 05:30 UTCEchelonGraph re-scored
  2. 2026-11-13 05:30 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  3. 2026-11-12 16:30 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  4. 2026-11-12 05:31 UTCEchelonGraph re-scored
  5. 2026-11-12 05:31 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-11-11 16:33 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  7. 2026-11-11 05:33 UTCEchelonGraph re-scored
  8. 2026-11-11 05:33 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-11-10 16:37 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  10. 2026-11-10 05:36 UTCEchelonGraph re-scored
  11. 2026-11-10 05:36 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-11-09 16:30 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  13. 2026-11-09 05:39 UTCEchelonGraph re-scored
  14. 2026-11-09 05:39 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-11-08 16:34 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  16. 2026-11-08 05:42 UTCEchelonGraph re-scored
  17. 2026-11-08 05:42 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-11-07 16:35 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  19. 2026-11-07 05:45 UTCEchelonGraph re-scored
  20. 2026-11-07 05:45 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-11-06 16:31 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  22. 2026-11-06 05:47 UTCEchelonGraph re-scored
  23. 2026-11-06 05:47 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-11-05 16:33 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  25. 2026-11-05 05:50 UTCEchelonGraph re-scored
Show 74 more
  1. 2026-11-05 05:50 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-11-04 16:31 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  3. 2026-11-04 13:55 UTCOSV refresh
  4. 2026-11-04 05:53 UTCEchelonGraph re-scored
  5. 2026-11-04 05:53 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-11-03 16:40 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  7. 2026-11-03 05:55 UTCEchelonGraph re-scored
  8. 2026-11-03 05:55 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-11-02 16:39 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  10. 2026-11-02 05:58 UTCEchelonGraph re-scored
  11. 2026-11-02 05:58 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-11-01 16:31 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  13. 2026-11-01 08:20 UTCEchelonGraph re-scored
  14. 2026-11-01 08:20 UTCGHSA enrichmentGHSA-hp5w-w29m-vg63 · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-11-01 06:00 UTCEchelonGraph re-scored
  16. 2026-10-31 16:29 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  17. 2026-10-31 06:03 UTCEchelonGraph re-scored
  18. 2026-10-30 16:31 UTCEPSS rescoreEPSS 1.4% · 73rd percentile
  19. 2026-10-30 06:05 UTCEchelonGraph re-scored
  20. 2026-10-29 16:30 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  21. 2026-10-29 06:08 UTCEchelonGraph re-scored
  22. 2026-10-28 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  23. 2026-10-28 06:11 UTCEchelonGraph re-scored
  24. 2026-10-27 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  25. 2026-10-27 06:14 UTCEchelonGraph re-scored
  26. 2026-10-26 16:28 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  27. 2026-10-25 17:40 UTCEchelonGraph re-scored
  28. 2026-10-25 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  29. 2026-10-25 02:13 UTCEchelonGraph re-scored
  30. 2026-10-24 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  31. 2026-10-24 02:16 UTCEchelonGraph re-scored
  32. 2026-10-23 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  33. 2026-10-23 02:18 UTCEchelonGraph re-scored
  34. 2026-10-22 16:31 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  35. 2026-10-22 02:19 UTCEchelonGraph re-scored
  36. 2026-10-21 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  37. 2026-10-21 02:22 UTCEchelonGraph re-scored
  38. 2026-10-20 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  39. 2026-10-20 02:23 UTCEchelonGraph re-scored
  40. 2026-10-19 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  41. 2026-10-19 01:45 UTCEchelonGraph re-scored
  42. 2026-10-18 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  43. 2026-10-18 07:59 UTCEchelonGraph re-scored
  44. 2026-10-18 01:45 UTCEchelonGraph re-scored
  45. 2026-10-17 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  46. 2026-10-17 01:45 UTCEchelonGraph re-scored
  47. 2026-10-16 16:35 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  48. 2026-10-16 01:46 UTCEchelonGraph re-scored
  49. 2026-10-15 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  50. 2026-10-14 21:17 UTCEchelonGraph re-scored
  51. 2026-10-14 16:29 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  52. 2026-10-13 17:14 UTCEchelonGraph re-scored
  53. 2026-10-13 16:30 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  54. 2026-10-12 17:05 UTCEchelonGraph re-scored
  55. 2026-10-12 16:30 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  56. 2026-10-11 21:51 UTCEchelonGraph re-scored
  57. 2026-10-11 13:45 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  58. 2026-10-10 19:57 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  59. 2026-10-09 22:03 UTCOSV refresh
  60. 2026-10-09 20:05 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  61. 2026-10-08 17:06 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  62. 2026-10-07 23:46 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  63. 2026-10-06 15:15 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  64. 2026-10-05 17:41 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  65. 2026-10-03 14:23 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  66. 2026-09-30 16:25 UTCEchelonGraph re-scored
  67. 2026-09-30 15:01 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  68. 2026-09-29 15:16 UTCEPSS rescoreEPSS 1.4% · 72nd percentile
  69. 2026-09-28 13:49 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  70. 2026-09-27 13:42 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  71. 2026-09-26 15:55 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  72. 2026-09-26 00:22 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  73. 2026-09-24 14:01 UTCEPSS rescoreEPSS 1.4% · 71st percentile
  74. 2026-09-23 13:45 UTCEPSS rescoreEPSS 1.4% · 71st percentile

Frequently asked(5)

What is CVE-2023-34340?
CVE-2023-34340 is a critical-severity vulnerability; its CVE record was published on June 21, 2023. Improper Authentication vulnerability in Apache Software Foundation Apache Accumulo. This issue affects Apache Accumulo: 2.1.0. Accumulo 2.1.0 contains a defect in the user authentication process that may succeed when invalid credentials are provided. Users are advised to upgrade to 2.1.1.
When was the CVE record for CVE-2023-34340 published?
The CVE record for CVE-2023-34340 was published on June 21, 2023. 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 November 21, 2024; the record at its source may have been updated since.
Is CVE-2023-34340 actively exploited?
CVE-2023-34340 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.4% probability of exploitation in the next 30 days (73rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-34340?
CVE-2023-34340 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-34340?
A fix for CVE-2023-34340 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-34340 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-2023-34340

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