CVE-2026-42500

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-05-29. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.3Exploit: NoneExposed: 0

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

Decoding a paletted BMP file with an out-of-range palette index results in a panic when accessing pixels in the invalid image.

CVSS v3
5.3
EG Score
5.3(medium)
EPSS
30.6%
KEV
Not listed

Published

May 29, 2026

Last Modified

June 1, 2026

Advisory Details (4)

Auto-updated Jun 15, 2026
No patch confirmed yet.
generic

GO-2026-5031 - Go Packages

https://pkg.go.dev/vuln/GO-2026-5031
generic
https://groups.google.com/g/golang-announce/c/uhYX90BlBvI
generic

x/image/bmp: panic when reading out of bound palette index · Issue #79576 · golang/go · GitHub

https://go.dev/issue/79576
generic
https://go.dev/cl/781500

Vendor Advisories for CVE-2026-42500(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
golang.org/x/image—0.41.0—

Data Freshness Timeline

(refreshed 13× in last 7d / 61× 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 120 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-42500?
CVE-2026-42500 is a medium vulnerability published on May 29, 2026. Decoding a paletted BMP file with an out-of-range palette index results in a panic when accessing pixels in the invalid image.
When was CVE-2026-42500 disclosed?
CVE-2026-42500 was first published in the National Vulnerability Database on May 29, 2026, with the most recent update on June 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42500 actively exploited?
CVE-2026-42500 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 30.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42500?
CVE-2026-42500 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-42500?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42500, 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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