CVE-2023-26154

MEDIUMNVD 5.95.9—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.9 under NVD CVSS v3. EPSS exploit probability: 1.0%, top 42% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.9
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 5.9Exploit: NoneExposed: 0

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

Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.com/pubnub/go/v7 before 7.2.0; versions of the package pubnub before 7.3.0; versions of the package pubnub/pubnub before 6.1.0; versions of the package pubnub before 5.3.0; versions of the package pubnub before 0.4.0; versions of the package pubnub/c-core before 4.5.0; versions of the package com.pubnub:pubnub-kotlin before 7.7.0; versions of the package pubnub/swift before 6.2.0; versions of the package pubnub before 5.2.0; versions of the package pubnub before 4.3.0 are vulnerable to Insufficient Entropy via the getKey function, due to inefficient implementation of the AES-256-CBC cryptographic algorithm. The provided encrypt function is less secure when hex encoding and trimming are applied, leaving half of the bits in the key always the same for every encoded message or file. Note: In order to exploit this vulnerability, the attacker needs to invest resources in preparing the attack and brute-force the encryption.

CVSS v3
5.9
EG Score
5.9(medium)
EG Risk
31(Track)
EG Risk 31/100SSVC: Track

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
Severity59% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
57.7%
KEV
Not listed

Published

December 6, 2023

Last Modified

November 21, 2024

References (34)

Affected Packages

(14 across 10 ecosystems)
Go(4)
PackageVulnerable rangeFixed inDependents
github.com/pubnub/go—0.0.0-20231016150651-428517fef5b9—
github.com/pubnub/go/v5—5.0.4-0.20231016150651-428517fef5b9—
github.com/pubnub/go/v6—6.1.1-0.20231016150651-428517fef5b9—
github.com/pubnub/go/v7—7.2.0—
Maven(2)
PackageVulnerable rangeFixed inDependents
com.pubnub:pubnub3.4 ... 4.6.5 (46 versions)——
com.pubnub:pubnub-kotlin4.0.0 ... 7.6.0 (29 versions)7.7.0—
crates.io(1)
PackageVulnerable rangeFixed inDependents
pubnub—0.4.0—
npm(1)
PackageVulnerable rangeFixed inDependents
pubnub—7.4.0—
NuGet(1)
PackageVulnerable rangeFixed inDependents
Pubnub3.0.0 ... 6.9.0 (175 versions)6.19.0—
Packagist(1)
PackageVulnerable rangeFixed inDependents
pubnub/pubnub3.5 ... v3.7.9 (43 versions)6.1.0—
pub.dev(1)
PackageVulnerable rangeFixed inDependents
pubnub0.1.0 ... 4.2.4 (39 versions)4.3.0—
PyPI(1)
PackageVulnerable rangeFixed inDependents
pubnub3.3 ... 7.2.0 (88 versions)7.3.0—
RubyGems(1)
PackageVulnerable rangeFixed inDependents
pubnub0.1.10 ... 5.2.2 (94 versions)5.3.0—
Swift(1)
PackageVulnerable rangeFixed inDependents
github.com/pubnub/swift—6.2.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 107 total refreshes for this CVE.

  1. 2026-07-23 02:20 UTCEG score recompute
  2. 2026-07-22 23:08 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
  4. 2026-07-22 14:06 UTCEPSS rescore
  5. 2026-07-21 15:23 UTCEPSS rescore
  6. 2026-07-20 17:06 UTCEPSS rescore
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  15. 2026-07-15 16:56 UTCEPSS rescore
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  17. 2026-07-15 02:10 UTCOSV refresh
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  24. 2026-07-12 05:45 UTCEPSS rescore
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  1. 2026-07-11 08:25 UTCEPSS rescore
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  18. 2026-06-27 03:04 UTCOSV refresh
  19. 2026-06-25 13:48 UTCEPSS rescore
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  21. 2026-06-24 14:03 UTCEPSS rescore
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  23. 2026-06-23 21:31 UTCEPSS rescore
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  31. 2026-06-19 19:24 UTCEPSS rescore
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  40. 2026-06-14 23:16 UTCEPSS rescore
  41. 2026-06-13 22:59 UTCEPSS rescore
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  43. 2026-06-12 23:10 UTCEPSS rescore
  44. 2026-06-11 13:59 UTCEPSS rescore
  45. 2026-06-10 22:17 UTCEPSS rescore
  46. 2026-06-10 13:21 UTCEPSS rescore
  47. 2026-06-10 13:21 UTCEPSS rescore
  48. 2026-06-09 13:17 UTCOSV refresh
  49. 2026-06-08 14:15 UTCEPSS rescore
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  51. 2026-06-07 15:23 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-26154?
CVE-2023-26154 is a medium vulnerability published on December 6, 2023. Versions of the package pubnub before 7.4.0; all versions of the package com.pubnub:pubnub; versions of the package pubnub before 6.19.0; all versions of the package github.com/pubnub/go; versions of the package github.com/pubnub/go/v7 before 7.2.0; versions of the package pubnub before 7.3.0;…
When was CVE-2023-26154 disclosed?
CVE-2023-26154 was first published in the National Vulnerability Database on December 6, 2023, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-26154 actively exploited?
CVE-2023-26154 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 57.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-26154?
CVE-2023-26154 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2023-26154?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-26154, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2023-26154

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