CVE-2023-42442

HIGHNVD 5.37.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 7.0 because EPSS predicts 56% probability of exploitation within the next 30 days (top 1.1% of all CVEs). NVD baseline CVSS 5.3 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Weaponized
7.0EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 56%
  • Public exploit code is available (ssvc poc, epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 56%CVSS: 5.3Exploit: ssvc poc · epss top5pct · epss high · public exploitExposed: 0

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

JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not affected. The api /api/v1/terminal/sessions/ permission control is broken and can be accessed anonymously. SessionViewSet permission classes set to [RBACPermission | IsSessionAssignee], relation is or, so any permission matched will be allowed. Versions 3.5.5 and 3.6.4 have a fix. After upgrading, visit the api $HOST/api/v1/terminal/sessions/?limit=1. The expected http response code is 401 (not_authenticated).

CVSS v3
5.3
EG Score
7.0(high)
EG Risk
73(Attend)
EG Risk 73/100SSVC: Attend

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
Severity70% × 45%
Exploitation65% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
56%
EPSS %ILE
99%
KEV
Not listed

Published

September 15, 2023

Last Modified

June 17, 2026

References (6)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 35× 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.

  1. 2026-07-30 16:26 UTCEPSS rescore
  2. 2026-07-30 16:26 UTCEPSS rescore
  3. 2026-07-30 01:28 UTCEPSS rescore
  4. 2026-07-30 01:28 UTCEPSS rescore
  5. 2026-07-28 15:34 UTCEPSS rescore
  6. 2026-07-28 15:34 UTCEPSS rescore
  7. 2026-07-26 14:52 UTCEPSS rescore
  8. 2026-07-26 14:52 UTCEPSS rescore
  9. 2026-07-24 14:16 UTCEPSS rescore
  10. 2026-07-23 02:26 UTCEG score recompute▲ 1.70
  11. 2026-07-22 23:13 UTCEG score recompute▼ 3.70
  12. 2026-07-22 14:06 UTCEPSS rescore
  13. 2026-07-20 17:06 UTCEPSS rescore
  14. 2026-07-19 14:29 UTCEPSS rescore
  15. 2026-07-18 10:03 UTCEPSS rescore
  16. 2026-07-18 10:03 UTCEPSS rescore
  17. 2026-07-16 17:01 UTCEPSS rescore
  18. 2026-07-16 17:01 UTCEPSS rescore
  19. 2026-07-15 16:56 UTCEPSS rescore
  20. 2026-07-15 16:56 UTCEPSS rescore
  21. 2026-07-15 09:49 UTCOSV refresh
  22. 2026-07-13 22:28 UTCEPSS rescore
  23. 2026-07-13 22:28 UTCEPSS rescore
  24. 2026-07-13 06:11 UTCEPSS rescore
  25. 2026-07-13 06:11 UTCEPSS rescore
Show 54 more
  1. 2026-07-11 08:26 UTCEPSS rescore
  2. 2026-07-11 08:26 UTCEPSS rescore
  3. 2026-07-09 19:08 UTCEPSS rescore
  4. 2026-07-08 15:13 UTCEPSS rescore
  5. 2026-07-07 13:44 UTCEPSS rescore
  6. 2026-07-06 02:22 UTCEPSS rescore
  7. 2026-07-04 06:29 UTCEPSS rescore
  8. 2026-07-01 15:05 UTCEPSS rescore
  9. 2026-06-30 23:21 UTCEPSS rescore
  10. 2026-06-30 23:21 UTCEPSS rescore
  11. 2026-06-28 04:55 UTCEPSS rescore
  12. 2026-06-28 04:55 UTCEPSS rescore
  13. 2026-06-27 10:04 UTCOSV refresh
  14. 2026-06-27 03:07 UTCEPSS rescore
  15. 2026-06-27 03:07 UTCEPSS rescore
  16. 2026-06-25 13:48 UTCEPSS rescore
  17. 2026-06-25 13:48 UTCEPSS rescore
  18. 2026-06-24 14:04 UTCEPSS rescore
  19. 2026-06-24 14:04 UTCEPSS rescore
  20. 2026-06-24 06:21 UTCNVD updateCVSS v3 → 5.3 · severity → MEDIUM
  21. 2026-06-23 21:31 UTCEPSS rescore
  22. 2026-06-23 21:31 UTCEPSS rescore
  23. 2026-06-21 01:58 UTCEPSS rescore
  24. 2026-06-21 01:58 UTCEPSS rescore
  25. 2026-06-18 17:51 UTCEPSS rescore
  26. 2026-06-17 17:51 UTCEPSS rescore
  27. 2026-06-17 17:51 UTCEPSS rescore
  28. 2026-06-16 17:51 UTCEPSS rescore
  29. 2026-06-16 17:51 UTCEPSS rescore
  30. 2026-06-15 17:47 UTCEPSS rescore
  31. 2026-06-15 17:47 UTCEPSS rescore
  32. 2026-06-14 23:16 UTCEPSS rescore
  33. 2026-06-13 22:59 UTCEPSS rescore
  34. 2026-06-13 22:59 UTCEPSS rescore
  35. 2026-06-12 23:10 UTCEPSS rescore
  36. 2026-06-12 23:10 UTCEPSS rescore
  37. 2026-06-10 22:17 UTCEPSS rescore
  38. 2026-06-10 13:21 UTCEPSS rescore
  39. 2026-06-10 13:21 UTCEPSS rescore
  40. 2026-06-09 20:47 UTCOSV refresh
  41. 2026-06-08 14:16 UTCEPSS rescore
  42. 2026-06-08 14:16 UTCEPSS rescore
  43. 2026-06-07 15:23 UTCEPSS rescore
  44. 2026-06-07 15:23 UTCEPSS rescore
  45. 2026-06-05 22:46 UTCEPSS rescore
  46. 2026-06-05 22:46 UTCEPSS rescore
  47. 2026-05-29 13:43 UTCEPSS rescore
  48. 2026-05-29 13:43 UTCEPSS rescore
  49. 2026-05-28 13:44 UTCEPSS rescore
  50. 2026-05-28 13:43 UTCEPSS rescore
  51. 2026-05-26 07:18 UTCEPSS rescore
  52. 2026-05-26 07:18 UTCEPSS rescore
  53. 2026-05-26 07:18 UTCEPSS rescore
  54. 2026-05-24 17:31 UTCEG score recompute

Publicly available exploits

(4 references)

Working exploit code is in the public domain (3 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCC1ph3rX13/CVE-2023-42442
    First seen Oct 20, 2023

    CVE-2023-42442 JumpServer Session 录像任意下载漏洞

    Open source ↗
  • GitHub PoCtarihub/blackjump
    First seen Oct 14, 2023

    JumpServer 堡垒机未授权综合漏洞利用, Exploit for CVE-2023-42442 / CVE-2023-42820 / RCE 2021

    Open source ↗
  • GitHub PoCHolyGu/CVE-2023-42442
    First seen Sep 27, 2023
    Open source ↗
  • Nucleihttp/cves/2023/CVE-2023-42442.yaml
    First seen Jan 1, 2023

    JumpServer > 3.6.4 - Information Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2023-42442?
CVE-2023-42442 is a high vulnerability published on September 15, 2023. JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not…
When was CVE-2023-42442 disclosed?
CVE-2023-42442 was first published in the National Vulnerability Database on September 15, 2023, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-42442 actively exploited?
CVE-2023-42442 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 56% probability of exploitation in the next 30 days, which ranks it in the top 1.1% of all scored CVEs.
What is the CVSS score of CVE-2023-42442?
CVE-2023-42442 has a CVSS v3 base score of 5.3 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.0.
How do I remediate CVE-2023-42442?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-42442, 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.

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