CVE-2021-28247

MEDIUMNVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2022-05-24. NVD baseline CVSS 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 5.4Exploit: Elevated riskExposed services: Not assessed

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

CA eHealth Performance Manager through 6.3.2.12 is affected by Cross Site Scripting (XSS). The impact is: An authenticated remote user is able to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data and perform a Reflected Cross-Site Scripting attack against the platform users. The affected endpoints are: cgi/nhWeb with the parameter report, aviewbin/filtermibobjects.pl with the parameter namefilter, and aviewbin/query.pl with the parameters System, SystemText, Group, and GroupText. NOTE: This vulnerability only affects products that are no longer supported by the maintainer

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
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
0.7%
EPSS %ILE
53rd
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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 public PoC (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

March 26, 2021

Last Modified

November 21, 2024

References (2)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 31× 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 177 total refreshes for this CVE.

  1. 2026-10-05 17:40 UTCEPSS rescore
  2. 2026-10-04 23:19 UTCEPSS rescore
  3. 2026-10-03 14:22 UTCEPSS rescore
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  6. 2026-10-01 19:46 UTCEPSS rescore
  7. 2026-09-30 15:33 UTCEG score recompute
  8. 2026-09-30 15:00 UTCEPSS rescore
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  10. 2026-09-28 13:47 UTCEPSS rescore
  11. 2026-09-27 13:41 UTCEPSS rescore
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  1. 2026-09-12 14:57 UTCEPSS rescore
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  5. 2026-09-07 15:58 UTCEPSS rescore
  6. 2026-09-06 13:44 UTCEPSS rescore
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  16. 2026-08-28 21:37 UTCEPSS rescore
  17. 2026-08-27 14:22 UTCEPSS rescore
  18. 2026-08-26 14:42 UTCEPSS rescore
  19. 2026-08-25 13:45 UTCEPSS rescore
  20. 2026-08-24 14:12 UTCEPSS rescore
  21. 2026-08-23 00:16 UTCEPSS rescore
  22. 2026-08-21 23:46 UTCEPSS rescore
  23. 2026-08-20 22:52 UTCEPSS rescore
  24. 2026-08-19 17:01 UTCEPSS rescore
  25. 2026-08-18 13:45 UTCEPSS rescore
  26. 2026-08-17 13:44 UTCEPSS rescore
  27. 2026-08-16 14:53 UTCEPSS rescore
  28. 2026-08-16 02:11 UTCEPSS rescore
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  31. 2026-08-13 21:57 UTCEPSS rescore
  32. 2026-08-12 13:47 UTCEPSS rescore
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  35. 2026-08-08 16:33 UTCEPSS rescore
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  39. 2026-08-04 15:06 UTCEPSS rescore
  40. 2026-08-04 10:34 UTCEPSS rescore
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  44. 2026-07-30 16:25 UTCEPSS rescore
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  46. 2026-07-30 01:28 UTCEPSS rescore
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  48. 2026-07-28 15:33 UTCEPSS rescore
  49. 2026-07-26 14:52 UTCEPSS rescore
  50. 2026-07-26 14:52 UTCEPSS rescore
  51. 2026-07-25 14:15 UTCEPSS rescore
  52. 2026-07-24 14:15 UTCEPSS rescore
  53. 2026-07-23 14:16 UTCEPSS rescore
  54. 2026-07-23 01:59 UTCEG score recompute
  55. 2026-07-22 22:46 UTCEG score recompute
  56. 2026-07-22 14:06 UTCEPSS rescore
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  58. 2026-07-21 15:22 UTCEPSS rescore
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  60. 2026-07-20 17:05 UTCEPSS rescore
  61. 2026-07-19 14:28 UTCEPSS rescore
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  66. 2026-07-16 17:00 UTCEPSS rescore
  67. 2026-07-15 16:55 UTCEPSS rescore
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  69. 2026-07-15 01:58 UTCEPSS rescore
  70. 2026-07-13 22:27 UTCEPSS rescore
  71. 2026-07-13 22:27 UTCEPSS rescore
  72. 2026-07-13 06:10 UTCEPSS rescore
  73. 2026-07-12 05:44 UTCEPSS rescore
  74. 2026-07-12 05:44 UTCEPSS rescore
  75. 2026-07-11 08:25 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2021-28247?
CVE-2021-28247 is a medium vulnerability published on March 26, 2021. CA eHealth Performance Manager through 6.3.2.12 is affected by Cross Site Scripting (XSS). The impact is: An authenticated remote user is able to inject arbitrary web script or HTML due to incorrect sanitization of user-supplied data and perform a Reflected Cross-Site Scripting attack against the…
When was CVE-2021-28247 disclosed?
CVE-2021-28247 was first published on March 26, 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-2021-28247 actively exploited?
CVE-2021-28247 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (53rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2021-28247?
CVE-2021-28247 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2021-28247?
No fix for CVE-2021-28247 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.

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