CVE-2026-15538

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory published 2026-07-13. 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: 1%CVSS: 6.3Exploit: None knownExposed: 0

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

A weakness has been identified in primefaces primereact up to 10.9.8. This issue affects the function ObjectUtils.mutateFieldData of the file components/lib/utils/ObjectUtils.js of the component API. This manipulation of the argument Field causes improperly controlled modification of object prototype attributes. The attack is possible to be carried out remotely. Upgrading to version 10.9.9 and 11.0.0 is capable of addressing this issue. Patch name: 61f182e11d9ef52032ff56f420da763a6938236f. It is recommended to upgrade the affected component.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity63% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
43%
KEV
Not listed

Published

July 13, 2026

Last Modified

August 27, 2026

Advisory Details (3)

Auto-updated Jul 13, 2026
No patch confirmed yet.
generic

GitHub - primefaces/primereact: The Most Complete React UI Component Library · GitHub

https://github.com/primefaces/primereact/
generic

Prototype pollution in ObjectUtils.mutateFieldData via primereact/utils · Issue #50 · Mantle-UI/mantle-ui · GitHub

https://github.com/Mantle-UI/mantle-ui/issues/50
generic

Prototype pollution in ObjectUtils.mutateFieldData via primereact/utils · Issue #8553 · primefaces/primereact · GitHub

https://github.com/primefaces/primereact/issues/8553

Vendor Advisories for CVE-2026-15538(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 15× in last 7d / 76× 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 110 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-15538?
CVE-2026-15538 is a medium vulnerability published on July 13, 2026. A weakness has been identified in primefaces primereact up to 10.9.8. This issue affects the function ObjectUtils.mutateFieldData of the file components/lib/utils/ObjectUtils.js of the component API. This manipulation of the argument Field causes improperly controlled modification of object…
When was CVE-2026-15538 disclosed?
CVE-2026-15538 was first published in the National Vulnerability Database on July 13, 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-2026-15538 actively exploited?
CVE-2026-15538 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.1% of all scored CVEs.
What is the CVSS score of CVE-2026-15538?
CVE-2026-15538 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-15538?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15538, 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.

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