CVE-2026-61422

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreMEDIUM confidence

Score 4.3 from GitHub Security Advisory published 2026-08-21. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
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.

Authenticated pre-validation SSRF vulnerability in Apache CloudStack's template and ISO registration functionality.

When registering a template or ISO, CloudStack makes a live HTTP HEAD/GET call to determine file size for secondary storage usage-limit checks, and this happens before URL validation is performed. However, this does not pose a malicious template or ISO registration risk, as URL validation still occurs prior to the actual download by the Secondary Storage VM.This issue affects Apache CloudStack: in 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

CVSS v3
4.3
EG Score
4.3(medium)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 21, 2026

Last Modified

August 27, 2026

Advisory Details (1)

Auto-updated Aug 24, 2026
No patch confirmed yet.
generic
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc

Vendor Advisories for CVE-2026-61422(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 17× in last 7d / 82× 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. 2026-09-20 20:16 UTCEPSS rescore
  2. 2026-09-20 19:26 UTCEG score recompute
  3. 2026-09-20 19:26 UTCGHSA enrichment
  4. 2026-09-19 20:32 UTCEG score recompute
  5. 2026-09-19 20:32 UTCGHSA enrichment
  6. 2026-09-18 21:37 UTCEG score recompute
  7. 2026-09-18 21:37 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-17 21:17 UTCEG score recompute
  10. 2026-09-17 21:17 UTCGHSA enrichment
  11. 2026-09-16 19:42 UTCEG score recompute
  12. 2026-09-16 19:42 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 19:08 UTCEG score recompute
  16. 2026-09-15 19:08 UTCGHSA enrichment
  17. 2026-09-14 20:13 UTCGHSA enrichment
  18. 2026-09-13 21:18 UTCEG score recompute
  19. 2026-09-13 21:18 UTCGHSA enrichment
  20. 2026-09-12 22:23 UTCEG score recompute
  21. 2026-09-12 22:22 UTCGHSA enrichment
  22. 2026-09-11 23:27 UTCEG score recompute
  23. 2026-09-11 23:27 UTCGHSA enrichment
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 09:37 UTCEPSS rescore
Show 61 more
  1. 2026-09-11 00:17 UTCEG score recompute
  2. 2026-09-11 00:17 UTCGHSA enrichment
  3. 2026-09-10 09:35 UTCEPSS rescore
  4. 2026-09-10 00:46 UTCGHSA enrichment
  5. 2026-09-09 01:49 UTCEG score recompute
  6. 2026-09-09 01:49 UTCGHSA enrichment
  7. 2026-09-08 22:01 UTCEPSS rescore
  8. 2026-09-08 01:55 UTCEG score recompute
  9. 2026-09-08 01:55 UTCGHSA enrichment
  10. 2026-09-07 16:01 UTCEPSS rescore
  11. 2026-09-07 02:59 UTCEG score recompute
  12. 2026-09-07 02:59 UTCGHSA enrichment
  13. 2026-09-06 13:47 UTCEPSS rescore
  14. 2026-09-06 04:01 UTCEG score recompute
  15. 2026-09-06 04:01 UTCGHSA enrichment
  16. 2026-09-05 05:07 UTCEG score recompute
  17. 2026-09-05 05:06 UTCGHSA enrichment
  18. 2026-09-04 06:12 UTCEG score recompute
  19. 2026-09-04 06:12 UTCGHSA enrichment
  20. 2026-09-04 05:07 UTCEPSS rescore
  21. 2026-09-03 07:17 UTCEG score recompute
  22. 2026-09-03 07:17 UTCGHSA enrichment
  23. 2026-09-02 14:12 UTCEPSS rescore
  24. 2026-09-02 08:23 UTCEG score recompute
  25. 2026-09-02 08:22 UTCGHSA enrichment
  26. 2026-09-01 13:54 UTCEPSS rescore
  27. 2026-09-01 09:27 UTCEG score recompute
  28. 2026-09-01 09:27 UTCGHSA enrichment
  29. 2026-09-01 04:40 UTCEPSS rescore
  30. 2026-08-31 10:31 UTCEG score recompute
  31. 2026-08-31 10:31 UTCGHSA enrichment
  32. 2026-08-30 19:17 UTCEPSS rescore
  33. 2026-08-30 11:34 UTCEG score recompute
  34. 2026-08-30 11:33 UTCGHSA enrichment
  35. 2026-08-30 01:22 UTCEPSS rescore
  36. 2026-08-29 12:39 UTCEG score recompute
  37. 2026-08-29 12:38 UTCGHSA enrichment
  38. 2026-08-28 21:42 UTCEPSS rescore
  39. 2026-08-28 13:41 UTCGHSA enrichment
  40. 2026-08-27 14:44 UTCEG score recompute
  41. 2026-08-27 14:44 UTCGHSA enrichment
  42. 2026-08-27 14:25 UTCEPSS rescore
  43. 2026-08-27 14:04 UTCGHSA enrichment
  44. 2026-08-26 15:09 UTCEG score recompute
  45. 2026-08-26 15:09 UTCGHSA enrichment
  46. 2026-08-26 14:46 UTCEPSS rescore
  47. 2026-08-25 16:14 UTCEG score recompute
  48. 2026-08-25 16:14 UTCGHSA enrichment
  49. 2026-08-25 13:49 UTCEPSS rescore
  50. 2026-08-24 17:19 UTCGHSA enrichment
  51. 2026-08-24 17:07 UTCEG score recompute▲ 4.30
  52. 2026-08-24 17:07 UTCGHSA enrichment
  53. 2026-08-24 17:06 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  54. 2026-08-24 16:44 UTCGHSA enrichment
  55. 2026-08-24 11:07 UTCEG score recompute
  56. 2026-08-24 11:07 UTCGHSA enrichment
  57. 2026-08-23 00:19 UTCEPSS rescore
  58. 2026-08-21 23:49 UTCEPSS rescore
  59. 2026-08-21 09:16 UTCNVD update
  60. 2026-08-21 08:40 UTCEG score recompute
  61. 2026-08-21 08:39 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-61422?
CVE-2026-61422 is a medium vulnerability published on August 21, 2026. Authenticated pre-validation SSRF vulnerability in Apache CloudStack's template and ISO registration functionality. When registering a template or ISO, CloudStack makes a live HTTP HEAD/GET call to determine file size for secondary storage usage-limit checks, and this happens before URL validation…
When was CVE-2026-61422 disclosed?
CVE-2026-61422 was first published in the National Vulnerability Database on August 21, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-61422 actively exploited?
CVE-2026-61422 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 84.9% of all scored CVEs.
What is the CVSS score of CVE-2026-61422?
CVE-2026-61422 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-61422?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-61422, 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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