CVE-2026-21764

MEDIUMNVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.1%, top 97% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

HCL DevOps Loop is affected by insufficient input validation that allows special characters where they should be restricted. This may result in unintended application behavior under certain conditions.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

July 17, 2026

Last Modified

August 13, 2026

Advisory Details (1)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

Security Bulletin: Multiple security vulnerabilities affect HCL DevOps Loop - Customer Support

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132296

Vendor Advisories for CVE-2026-21764(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 61× 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 108 total refreshes for this CVE.

  1. 2026-09-10 09:34 UTCEPSS rescore
  2. 2026-09-08 22:00 UTCEPSS rescore
  3. 2026-09-08 00:00 UTCEG score recompute
  4. 2026-09-08 00:00 UTCGHSA enrichment
  5. 2026-09-07 16:01 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-05 20:26 UTCEG score recompute
  9. 2026-09-05 20:26 UTCGHSA enrichment
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:11 UTCEPSS rescore
  12. 2026-09-01 13:53 UTCEPSS rescore
  13. 2026-09-01 04:39 UTCEPSS rescore
  14. 2026-08-31 04:51 UTCEG score recompute
  15. 2026-08-31 04:50 UTCGHSA enrichment
  16. 2026-08-30 19:17 UTCEPSS rescore
  17. 2026-08-30 03:17 UTCEG score recompute
  18. 2026-08-30 03:17 UTCGHSA enrichment
  19. 2026-08-30 01:22 UTCEPSS rescore
  20. 2026-08-28 21:41 UTCEPSS rescore
  21. 2026-08-27 14:25 UTCEPSS rescore
  22. 2026-08-27 13:28 UTCEG score recompute
  23. 2026-08-27 13:28 UTCGHSA enrichment
  24. 2026-08-26 14:46 UTCEPSS rescore
  25. 2026-08-26 11:55 UTCEG score recompute
Show 75 more
  1. 2026-08-26 11:55 UTCGHSA enrichment
  2. 2026-08-25 13:48 UTCEPSS rescore
  3. 2026-08-25 08:44 UTCEG score recompute
  4. 2026-08-25 08:44 UTCGHSA enrichment
  5. 2026-08-24 06:35 UTCGHSA enrichment
  6. 2026-08-23 05:03 UTCEG score recompute
  7. 2026-08-23 05:03 UTCGHSA enrichment
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-22 03:30 UTCEG score recompute
  10. 2026-08-22 03:30 UTCGHSA enrichment
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-21 01:57 UTCEG score recompute
  13. 2026-08-21 01:57 UTCGHSA enrichment
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-20 00:24 UTCEG score recompute
  16. 2026-08-20 00:24 UTCGHSA enrichment
  17. 2026-08-19 17:03 UTCEPSS rescore
  18. 2026-08-18 22:51 UTCEG score recompute
  19. 2026-08-18 22:51 UTCGHSA enrichment
  20. 2026-08-18 13:48 UTCEPSS rescore
  21. 2026-08-17 21:14 UTCEG score recompute
  22. 2026-08-17 21:14 UTCGHSA enrichment
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-16 18:15 UTCEG score recompute
  25. 2026-08-16 18:15 UTCGHSA enrichment
  26. 2026-08-16 14:56 UTCEPSS rescore
  27. 2026-08-16 02:14 UTCEPSS rescore
  28. 2026-08-15 16:42 UTCEG score recompute
  29. 2026-08-15 16:42 UTCGHSA enrichment
  30. 2026-08-15 01:30 UTCEPSS rescore
  31. 2026-08-14 15:09 UTCEG score recompute
  32. 2026-08-14 15:09 UTCGHSA enrichment
  33. 2026-08-13 22:00 UTCEPSS rescore
  34. 2026-08-13 13:36 UTCEG score recompute▲ 1.20
  35. 2026-08-13 13:36 UTCGHSA enrichment
  36. 2026-08-13 13:34 UTCNVD updateCVSS v3 → 4.3 · severity → MEDIUM
  37. 2026-08-12 13:50 UTCEPSS rescore
  38. 2026-08-11 13:42 UTCEPSS rescore
  39. 2026-08-11 00:00 UTCEPSS rescore
  40. 2026-08-10 18:13 UTCEG score recompute
  41. 2026-08-10 18:13 UTCGHSA enrichment
  42. 2026-08-09 13:46 UTCEPSS rescore
  43. 2026-08-08 16:37 UTCEPSS rescore
  44. 2026-08-07 16:50 UTCEG score recompute
  45. 2026-08-07 16:50 UTCGHSA enrichment
  46. 2026-08-06 13:46 UTCEPSS rescore
  47. 2026-08-05 19:17 UTCEPSS rescore
  48. 2026-08-04 15:27 UTCEG score recompute
  49. 2026-08-04 15:27 UTCGHSA enrichment
  50. 2026-08-04 15:10 UTCEPSS rescore
  51. 2026-08-04 10:38 UTCEPSS rescore
  52. 2026-08-03 10:35 UTCEPSS rescore
  53. 2026-08-02 02:26 UTCEPSS rescore
  54. 2026-08-01 14:04 UTCEG score recompute
  55. 2026-08-01 14:04 UTCGHSA enrichment
  56. 2026-08-01 04:15 UTCEPSS rescore
  57. 2026-07-30 01:30 UTCEPSS rescore
  58. 2026-07-29 12:41 UTCEG score recompute
  59. 2026-07-29 12:41 UTCGHSA enrichment
  60. 2026-07-27 14:13 UTCEPSS rescore
  61. 2026-07-26 14:54 UTCEPSS rescore
  62. 2026-07-26 14:54 UTCEPSS rescore
  63. 2026-07-26 11:18 UTCEG score recompute
  64. 2026-07-26 11:18 UTCGHSA enrichment
  65. 2026-07-25 14:17 UTCEPSS rescore
  66. 2026-07-25 14:17 UTCEPSS rescore
  67. 2026-07-24 14:17 UTCEPSS rescore
  68. 2026-07-23 14:18 UTCEPSS rescore
  69. 2026-07-23 14:18 UTCEPSS rescore
  70. 2026-07-23 03:06 UTCEG score recompute
  71. 2026-07-22 14:08 UTCEPSS rescore
  72. 2026-07-21 15:24 UTCEPSS rescore
  73. 2026-07-21 15:24 UTCEPSS rescore
  74. 2026-07-20 17:08 UTCEPSS rescore
  75. 2026-07-19 14:31 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-21764?
CVE-2026-21764 is a medium vulnerability published on July 17, 2026. HCL DevOps Loop is affected by insufficient input validation that allows special characters where they should be restricted. This may result in unintended application behavior under certain conditions.
When was CVE-2026-21764 disclosed?
CVE-2026-21764 was first published in the National Vulnerability Database on July 17, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21764 actively exploited?
CVE-2026-21764 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 96.8% of all scored CVEs.
What is the CVSS score of CVE-2026-21764?
CVE-2026-21764 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-21764?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-21764, 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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