CVE-2026-21822

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreHIGH confidence

Score 6.3 from GitHub Security Advisory published 2026-09-18. A secondary CVSS source baseline 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.3Exploit: None knownExposed services: Not assessed

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

HCLSoftware AppScan 360° was affected by a Path Traversal vulnerability in the ASReportService component. Improper handling of file paths allows an authenticated attacker to read or write files outside the intended directory, potentially enabling file system structure inspection or unauthorized file modification within the application's directory scope.

CVSS v3
6.3
EG Score
6.3MEDIUMhigh confidence
EG Risk
28
EG Risk 28/100CISA SSVC

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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
10th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 18, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 18, 2026
No patch confirmed yet.
generic

Security Bulletin: HCL AppScan 360° is affected by a path traversal vulnerability (CVE-2026-21822) - Customer Support

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0133460

Vendor Advisories for CVE-2026-21822(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 19× in last 7d / 53× 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. 2026-10-05 05:54 UTCEG score recompute
  2. 2026-10-05 05:54 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 06:22 UTCEG score recompute
  5. 2026-10-04 06:22 UTCGHSA enrichment
  6. 2026-10-03 06:52 UTCEG score recompute
  7. 2026-10-03 06:52 UTCGHSA enrichment
  8. 2026-10-02 07:21 UTCEG score recompute
  9. 2026-10-02 07:21 UTCGHSA enrichment
  10. 2026-10-01 19:49 UTCEPSS rescore
  11. 2026-10-01 07:51 UTCEG score recompute
  12. 2026-10-01 07:51 UTCGHSA enrichment
  13. 2026-09-30 15:03 UTCEPSS rescore
  14. 2026-09-30 08:21 UTCEG score recompute
  15. 2026-09-30 08:21 UTCGHSA enrichment
  16. 2026-09-29 15:21 UTCEPSS rescore
  17. 2026-09-29 08:49 UTCEG score recompute
  18. 2026-09-29 08:49 UTCGHSA enrichment
  19. 2026-09-28 13:51 UTCEPSS rescore
  20. 2026-09-28 09:19 UTCEG score recompute
  21. 2026-09-28 09:19 UTCGHSA enrichment
  22. 2026-09-27 13:47 UTCEPSS rescore
  23. 2026-09-27 09:49 UTCEG score recompute
  24. 2026-09-27 09:49 UTCGHSA enrichment
  25. 2026-09-26 15:58 UTCEPSS rescore
Show 28 more
  1. 2026-09-26 10:19 UTCEG score recompute
  2. 2026-09-26 10:19 UTCGHSA enrichment
  3. 2026-09-26 00:26 UTCEPSS rescore
  4. 2026-09-25 10:46 UTCEG score recompute
  5. 2026-09-25 10:46 UTCGHSA enrichment
  6. 2026-09-24 14:03 UTCEPSS rescore
  7. 2026-09-24 11:06 UTCEG score recompute
  8. 2026-09-24 11:06 UTCGHSA enrichment
  9. 2026-09-23 11:36 UTCEG score recompute
  10. 2026-09-23 11:36 UTCGHSA enrichment
  11. 2026-09-22 12:06 UTCEG score recompute
  12. 2026-09-22 12:06 UTCGHSA enrichment
  13. 2026-09-21 12:35 UTCEG score recompute
  14. 2026-09-21 12:35 UTCGHSA enrichment
  15. 2026-09-20 20:15 UTCEPSS rescore
  16. 2026-09-20 13:04 UTCEG score recompute
  17. 2026-09-20 13:04 UTCGHSA enrichment
  18. 2026-09-19 13:30 UTCEG score recompute
  19. 2026-09-19 13:30 UTCGHSA enrichment
  20. 2026-09-18 19:27 UTCEPSS rescore
  21. 2026-09-18 14:00 UTCGHSA enrichment
  22. 2026-09-18 11:20 UTCEG score recompute
  23. 2026-09-18 11:20 UTCGHSA enrichment
  24. 2026-09-18 10:44 UTCEG score recompute
  25. 2026-09-18 10:44 UTCGHSA enrichment
  26. 2026-09-18 09:18 UTCEG score recompute
  27. 2026-09-18 08:49 UTCEG score recompute
  28. 2026-09-18 08:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-21822?
CVE-2026-21822 is a medium vulnerability published on September 18, 2026. HCLSoftware AppScan 360° was affected by a Path Traversal vulnerability in the ASReportService component. Improper handling of file paths allows an authenticated attacker to read or write files outside the intended directory, potentially enabling file system structure inspection or unauthorized…
When was CVE-2026-21822 disclosed?
CVE-2026-21822 was first published on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-21822 actively exploited?
CVE-2026-21822 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (10th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-21822?
CVE-2026-21822 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-21822?
No fix for CVE-2026-21822 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-21822 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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