CVE-2026-15276

LOWPre-NVD 3.33.3
EchelonGraph scoreMEDIUM confidence

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

Score 3.3 from GitHub Security Advisory (severity: LOW) published 2026-07-10. A secondary CVSS source baseline 3.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source
Elevated
3.3EG
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: 0.2%CVSS: 3.3Exploit: 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 flaw has been found in pdeljanov Symphonia up to 0.6.0. This vulnerability affects unknown code of the component Metadata Handler. This manipulation causes denial of service. The attack needs to be launched locally. The exploit has been published and may be used. The pull request to fix this issue awaits acceptance.

CVSS v3
3.3
EG Score
3.3LOWmedium confidence
EG Risk
31
EG Risk 31/100

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)
Severity33% × 45%
The EG Score, 3.3 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
0.2%
EPSS %ILE
4th
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 9, 2026

Last Modified

September 3, 2026

References (7)

Vendor Advisories for CVE-2026-15276(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 / 30× 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 124 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 24 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  2. 2026-10-12 16:32 UTCEG score recompute
  3. 2026-10-11 20:10 UTCEG score recompute
  4. 2026-10-11 17:22 UTCEG score recompute
  5. 2026-10-11 14:55 UTCEG score recompute
  6. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  7. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  10. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-10-01 16:00 UTCEG score recompute
  16. 2026-10-01 16:00 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  17. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  18. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  20. 2026-09-28 09:59 UTCEG score recompute
  21. 2026-09-28 09:59 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  22. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  24. 2026-09-23 05:52 UTCEG score recompute
  25. 2026-09-23 05:52 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
Show 75 more
  1. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-09-18 05:27 UTCEG score recompute
  3. 2026-09-18 05:27 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  4. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  8. 2026-09-12 03:20 UTCEG score recompute
  9. 2026-09-12 03:20 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  10. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  11. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  13. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  14. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  15. 2026-09-05 22:34 UTCEG score recompute
  16. 2026-09-05 22:34 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  17. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  18. 2026-09-03 04:21 UTCEG score recompute
  19. 2026-09-03 04:21 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  20. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  21. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  22. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  23. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-08-30 06:42 UTCEG score recompute
  25. 2026-08-30 06:42 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  26. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  27. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  28. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  29. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  30. 2026-08-26 03:47 UTCEG score recompute
  31. 2026-08-26 03:47 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  32. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  33. 2026-08-23 02:24 UTCEG score recompute
  34. 2026-08-23 02:24 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  35. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  36. 2026-08-20 08:12 UTCEG score recompute
  37. 2026-08-20 08:12 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  38. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  39. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  40. 2026-08-17 13:59 UTCEG score recompute
  41. 2026-08-17 13:59 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  42. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  44. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  46. 2026-08-14 19:47 UTCEG score recompute
  47. 2026-08-14 19:47 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  48. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  49. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  50. 2026-08-12 01:34 UTCEG score recompute
  51. 2026-08-12 01:34 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  52. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  53. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  54. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  55. 2026-08-09 07:22 UTCEG score recompute
  56. 2026-08-09 07:22 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  57. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  58. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  59. 2026-08-06 13:10 UTCEG score recompute
  60. 2026-08-06 13:10 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  61. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  62. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  63. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  64. 2026-08-03 18:56 UTCEG score recompute
  65. 2026-08-03 18:56 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  66. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  67. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  68. 2026-08-01 00:44 UTCEG score recompute
  69. 2026-08-01 00:44 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  70. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  71. 2026-07-29 06:28 UTCEG score recompute
  72. 2026-07-29 06:28 UTCGHSA enrichmentGHSA-whwr-vg23-jrwg · GitHub severity LOW · GitHub CVSS 3.3
  73. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  74. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  75. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile

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Frequently asked(5)

What is CVE-2026-15276?
CVE-2026-15276 is a low-severity vulnerability; its CVE record was published on July 9, 2026. A flaw has been found in pdeljanov Symphonia up to 0.6.0. This vulnerability affects unknown code of the component Metadata Handler. This manipulation causes denial of service. The attack needs to be launched locally. The exploit has been published and may be used. The pull request to fix this…
When was the CVE record for CVE-2026-15276 published?
The CVE record for CVE-2026-15276 was published on July 9, 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 September 3, 2026; the record at its source may have been updated since.
Is CVE-2026-15276 actively exploited?
CVE-2026-15276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-15276?
CVE-2026-15276 has a CVSS base score of 3.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-15276?
A fix for CVE-2026-15276 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-2026-15276 are linked in the Vendor Advisories panel on this page.

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