CVE-2021-29442

HIGHNVD 8.68.9▲
EchelonGraph scoreHIGH confidence

Score elevated to 8.9 because EPSS predicts 65% probability of exploitation within the next 30 days (top 0.8% of all CVEs). NVD baseline CVSS 8.6 retained for reference. Confidence: see factors.

Triggered by: EPSS exploit prediction ≥85%
Sources: epss, nvd
Elevated
8.9EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 67%
CISA-KEV: Not listedEPSS PROB: 67%CVSS: 8.6Exploit: Elevated riskExposed: 0

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

Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly protected with the @Secured annotation, the /derby endpoint is not protected and can be openly accessed by unauthenticated users. These endpoints are only valid when using embedded storage (derby DB) so this issue should not affect those installations using external storage (e.g. mysql)

CVSS v3
8.6
EG Score
8.9(high)
EG Risk
70(Track)
EG Risk 70/100SSVC: 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
Severity89% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
67%
EPSS %ILE
99%
KEV
Not listed

Published

April 27, 2021

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Sep 1, 2026
Patch available. Sources: github, github_pr.
github_pr

[ISSUE #4463] fix derbyOps interface security problem

Fix merged in alibaba/nacos PR #4517 on 2020-12-21 — awaiting tagged release

https://github.com/alibaba/nacos/pull/4517
generic

Report a security vulnerability in nacos to execute arbitrary SQL without authentication · Issue #4463 · alibaba/nacos · GitHub

https://github.com/alibaba/nacos/issues/4463
github Patch Available

Authentication Bypass · CVE-2021-29441 · GitHub Advisory Database · GitHub

https://github.com/advisories/GHSA-36hp-jr8h-556f

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
com.alibaba.nacos:nacos-common0.1.0 ... 1.4.0-BETA (39 versions)1.4.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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 120 total refreshes for this CVE.

  1. 2026-09-18 19:23 UTCEPSS rescore
  2. 2026-09-17 19:23 UTCEPSS rescore
  3. 2026-09-17 19:23 UTCEPSS rescore
  4. 2026-09-16 14:05 UTCEPSS rescore
  5. 2026-09-15 03:06 UTCEPSS rescore
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  7. 2026-09-13 16:43 UTCEPSS rescore
  8. 2026-09-12 14:57 UTCEPSS rescore
  9. 2026-09-11 14:49 UTCEPSS rescore
  10. 2026-09-11 09:33 UTCEPSS rescore
  11. 2026-09-06 18:13 UTCOSV refresh
  12. 2026-09-06 13:44 UTCEPSS rescore
  13. 2026-09-05 15:25 UTCEPSS rescore
  14. 2026-09-04 05:03 UTCEPSS rescore
  15. 2026-09-04 05:03 UTCEPSS rescore
  16. 2026-09-02 14:08 UTCEPSS rescore
  17. 2026-09-01 13:50 UTCEPSS rescore
  18. 2026-09-01 03:32 UTCEPSS rescore
  19. 2026-08-30 19:14 UTCEPSS rescore
  20. 2026-08-30 01:19 UTCEPSS rescore
  21. 2026-08-28 21:37 UTCEPSS rescore
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  24. 2026-08-25 13:45 UTCEPSS rescore
  25. 2026-08-24 14:12 UTCEPSS rescore
Show 75 more
  1. 2026-08-21 23:46 UTCEPSS rescore
  2. 2026-08-20 22:52 UTCEPSS rescore
  3. 2026-08-20 04:15 UTCOSV refresh
  4. 2026-08-19 17:01 UTCEPSS rescore
  5. 2026-08-18 13:45 UTCEPSS rescore
  6. 2026-08-17 13:44 UTCEPSS rescore
  7. 2026-08-16 14:53 UTCEPSS rescore
  8. 2026-08-16 02:11 UTCEPSS rescore
  9. 2026-08-16 02:11 UTCEPSS rescore
  10. 2026-08-15 01:27 UTCEPSS rescore
  11. 2026-08-13 21:57 UTCEPSS rescore
  12. 2026-08-12 13:47 UTCEPSS rescore
  13. 2026-08-11 13:38 UTCEPSS rescore
  14. 2026-08-06 13:43 UTCEPSS rescore
  15. 2026-08-05 19:14 UTCEPSS rescore
  16. 2026-08-04 23:11 UTCOSV refresh
  17. 2026-08-04 10:34 UTCEPSS rescore
  18. 2026-08-03 10:33 UTCEPSS rescore
  19. 2026-08-01 04:13 UTCEPSS rescore
  20. 2026-07-30 16:25 UTCEPSS rescore
  21. 2026-07-30 16:25 UTCEPSS rescore
  22. 2026-07-30 01:28 UTCEPSS rescore
  23. 2026-07-30 01:27 UTCEPSS rescore
  24. 2026-07-28 15:33 UTCEPSS rescore
  25. 2026-07-26 14:52 UTCEPSS rescore
  26. 2026-07-26 14:52 UTCEPSS rescore
  27. 2026-07-25 14:15 UTCEPSS rescore
  28. 2026-07-24 14:15 UTCEPSS rescore
  29. 2026-07-23 01:59 UTCEG score recompute▲ 0.30
  30. 2026-07-22 22:46 UTCEG score recompute▼ 0.40
  31. 2026-07-22 14:06 UTCEPSS rescore
  32. 2026-07-22 14:06 UTCEPSS rescore
  33. 2026-07-21 15:22 UTCEPSS rescore
  34. 2026-07-21 15:22 UTCEPSS rescore
  35. 2026-07-20 17:05 UTCEPSS rescore
  36. 2026-07-18 21:29 UTCOSV refresh
  37. 2026-07-18 10:02 UTCEPSS rescore
  38. 2026-07-18 10:02 UTCEPSS rescore
  39. 2026-07-15 16:55 UTCEPSS rescore
  40. 2026-07-15 16:55 UTCEPSS rescore
  41. 2026-07-15 01:58 UTCEPSS rescore
  42. 2026-07-13 06:10 UTCEPSS rescore
  43. 2026-07-12 05:44 UTCEPSS rescore
  44. 2026-07-12 05:44 UTCEPSS rescore
  45. 2026-07-11 08:25 UTCEPSS rescore
  46. 2026-07-11 08:25 UTCEPSS rescore
  47. 2026-07-09 19:07 UTCEPSS rescore
  48. 2026-07-06 02:21 UTCEPSS rescore
  49. 2026-07-06 02:21 UTCEPSS rescore
  50. 2026-07-04 06:29 UTCEPSS rescore
  51. 2026-07-04 06:29 UTCEPSS rescore
  52. 2026-07-01 15:03 UTCEPSS rescore
  53. 2026-07-01 04:18 UTCOSV refresh
  54. 2026-06-29 14:04 UTCEPSS rescore
  55. 2026-06-28 14:05 UTCEPSS rescore
  56. 2026-06-28 04:54 UTCEPSS rescore
  57. 2026-06-28 04:54 UTCEPSS rescore
  58. 2026-06-27 03:06 UTCEPSS rescore
  59. 2026-06-27 03:06 UTCEPSS rescore
  60. 2026-06-25 13:48 UTCEPSS rescore
  61. 2026-06-25 13:48 UTCEPSS rescore
  62. 2026-06-23 21:31 UTCEPSS rescore
  63. 2026-06-23 21:31 UTCEPSS rescore
  64. 2026-06-18 17:51 UTCEPSS rescore
  65. 2026-06-18 17:51 UTCEPSS rescore
  66. 2026-06-17 17:51 UTCEPSS rescore
  67. 2026-06-16 17:51 UTCEPSS rescore
  68. 2026-06-15 17:46 UTCEPSS rescore
  69. 2026-06-13 22:58 UTCEPSS rescore
  70. 2026-06-13 22:58 UTCEPSS rescore
  71. 2026-06-13 07:13 UTCOSV refresh
  72. 2026-06-10 22:16 UTCEPSS rescore
  73. 2026-06-08 14:15 UTCEPSS rescore
  74. 2026-06-07 15:23 UTCEPSS rescore
  75. 2026-06-07 15:23 UTCEPSS rescore

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCVictorShem/QVD-2024-26473
    First seen Jul 31, 2024

    QVD-2024-26473 && CVE-2021-29442

    Open source ↗
  • Nucleihttp/cves/2021/CVE-2021-29442.yaml
    First seen Jan 1, 2021

    Nacos <1.4.1 - Authentication Bypass

    Open source ↗

Frequently asked(5)

What is CVE-2021-29442?
CVE-2021-29442 is a high vulnerability published on April 27, 2021. Nacos is a platform designed for dynamic service discovery and configuration and service management. In Nacos before version 1.4.1, the ConfigOpsController lets the user perform management operations like querying the database or even wiping it out. While the /data/remove endpoint is properly…
When was CVE-2021-29442 disclosed?
CVE-2021-29442 was first published in the National Vulnerability Database on April 27, 2021, 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-2021-29442 actively exploited?
CVE-2021-29442 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 67% probability of exploitation in the next 30 days, which ranks it in the top 0.7% of all scored CVEs.
What is the CVSS score of CVE-2021-29442?
CVE-2021-29442 has a CVSS v3 base score of 8.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.9.
How do I remediate CVE-2021-29442?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-29442, 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

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