CVE-2026-15321

LOWPre-NVD 2.42.4
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 2.4 from GitHub Security Advisory (severity: LOW) published 2026-07-10. A secondary CVSS source baseline 2.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
2.4EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 2.4Exploit: No code on recordExposed services: Not assessed

A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

A vulnerability was found in MyEMS up to 6.4.0. The affected element is the function on_post of the file myems-api/core/svg.py of the component Admin Backend. The manipulation of the argument new_values['data'] results in cross site scripting. The attack can be launched remotely. The exploit has been made public and could be used. Upgrading to version 6.5.0 is sufficient to fix this issue. The patch is identified as 4a97edfbd786c779d0322054833b21ddf54d5b06. It is suggested to upgrade the affected component. The issue report remains open even though there is an official fix for it.

CVSS v3
2.4
EG Score
2.4LOWmedium confidence
EG Risk
27
EG Risk 27/100

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 (value × EchelonGraph’s weight)
Severity24% × 45%
The EG Score, 2.4 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is referenced, but no release containing it is confirmed. Check the referenced fix and the vendor's advisory for a release that contains it and apply that within your standard update timelines; until then, restrict network exposure of the affected system or apply the vendor's mitigation.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 10, 2026

Last Modified

July 10, 2026

References (8)

Vendor Advisories for CVE-2026-15321(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 33× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 130 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 30 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  2. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  3. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  4. 2026-10-12 16:32 UTCEG score recompute
  5. 2026-10-11 20:10 UTCEG score recompute
  6. 2026-10-11 17:22 UTCEG score recompute
  7. 2026-10-11 14:55 UTCEG score recompute
  8. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  9. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  10. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  11. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  14. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  15. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-10-01 16:00 UTCEG score recompute
  19. 2026-10-01 16:00 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  20. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  21. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-09-28 09:53 UTCEG score recompute
  24. 2026-09-28 09:53 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  25. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.4% · 29th percentile
Show 75 more
  1. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  2. 2026-09-23 05:50 UTCEG score recompute
  3. 2026-09-23 05:50 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  4. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  5. 2026-09-18 05:26 UTCEG score recompute
  6. 2026-09-18 05:26 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  7. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  8. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  9. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  10. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  11. 2026-09-12 03:17 UTCEG score recompute
  12. 2026-09-12 03:17 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  13. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  14. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  15. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  16. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  17. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  18. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  19. 2026-09-05 21:53 UTCEG score recompute
  20. 2026-09-05 21:53 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  21. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  22. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  23. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  24. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  25. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  26. 2026-08-30 06:41 UTCEG score recompute
  27. 2026-08-30 06:41 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  28. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  29. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  30. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  31. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  32. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  33. 2026-08-25 11:56 UTCEG score recompute
  34. 2026-08-25 11:56 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  35. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  36. 2026-08-22 12:21 UTCEG score recompute
  37. 2026-08-22 12:21 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  38. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  39. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  40. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  41. 2026-08-19 12:20 UTCEG score recompute
  42. 2026-08-19 12:20 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  43. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  46. 2026-08-16 11:58 UTCEG score recompute
  47. 2026-08-16 11:58 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  48. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  49. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  50. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  51. 2026-08-13 12:22 UTCEG score recompute
  52. 2026-08-13 12:22 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  53. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  54. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  55. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  56. 2026-08-10 12:46 UTCEG score recompute
  57. 2026-08-10 12:46 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  58. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  59. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  60. 2026-08-07 13:11 UTCEG score recompute
  61. 2026-08-07 13:11 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  62. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  63. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  64. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  65. 2026-08-04 13:36 UTCEG score recompute
  66. 2026-08-04 13:36 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  67. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  68. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  69. 2026-08-01 11:26 UTCEG score recompute
  70. 2026-08-01 11:26 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4
  71. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  72. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  73. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  74. 2026-07-29 11:50 UTCEG score recompute
  75. 2026-07-29 11:50 UTCGHSA enrichmentGHSA-4qw7-r7cw-fwf5 · GitHub severity LOW · GitHub CVSS 2.4

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Frequently asked(5)

What is CVE-2026-15321?
CVE-2026-15321 is a low-severity vulnerability; its CVE record was published on July 10, 2026. A vulnerability was found in MyEMS up to 6.4.0. The affected element is the function onpost of the file myems-api/core/svg.py of the component Admin Backend. The manipulation of the argument newvalues['data'] results in cross site scripting. The attack can be launched remotely. The exploit has been…
When was the CVE record for CVE-2026-15321 published?
The CVE record for CVE-2026-15321 was published on July 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 10, 2026; the record at its source may have been updated since.
Is CVE-2026-15321 actively exploited?
CVE-2026-15321 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15321?
CVE-2026-15321 has a CVSS base score of 2.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15321?
A fix for CVE-2026-15321 is referenced (a reference tagged "Patch", often a source commit), but EchelonGraph has no release containing it on record. Check that reference and the vendor's advisory for a release that contains the fix and update to it; until then, restrict network exposure of the affected system or apply the vendor's mitigation. The vendor advisories EchelonGraph has for CVE-2026-15321 are linked in the Vendor Advisories panel on this page.

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