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
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 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)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
32%
KEV
Not listed

Published

May 29, 2026

Last Modified

July 22, 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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-image0.0~git20200119.58c2397-1 ... 0.9.0-1 (22 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-image0.11.0-1 ... 0.9.0-1 (16 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-image0.18.0-1 ... 0.42.0-1 (6 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
golang-golang-x-image0.18.0-1, 0.32.0-1, 0.35.0-1, 0.38.0-1, 0.39.0-10.42.0-1—
Go(1)
PackageVulnerable rangeFixed inDependents
golang.org/x/image—0.41.0—

Data Freshness Timeline

(refreshed 5× in last 7d / 53× 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 183 total refreshes for this CVE.

  1. 2026-09-04 05:06 UTCEPSS rescore
  2. 2026-09-02 14:12 UTCEPSS rescore
  3. 2026-09-01 13:54 UTCEPSS rescore
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 01:22 UTCEPSS rescore
  6. 2026-08-28 21:41 UTCEPSS rescore
  7. 2026-08-27 14:25 UTCEPSS rescore
  8. 2026-08-26 14:46 UTCEPSS rescore
  9. 2026-08-25 13:49 UTCEPSS rescore
  10. 2026-08-25 04:18 UTCEG score recompute
  11. 2026-08-25 04:18 UTCGHSA enrichment
  12. 2026-08-23 14:11 UTCEG score recompute
  13. 2026-08-23 14:11 UTCGHSA enrichment
  14. 2026-08-23 00:19 UTCEPSS rescore
  15. 2026-08-21 23:49 UTCEPSS rescore
  16. 2026-08-21 15:01 UTCEG score recompute
  17. 2026-08-21 15:01 UTCGHSA enrichment
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 10:25 UTCEG score recompute
  20. 2026-08-20 10:25 UTCGHSA enrichment
  21. 2026-08-19 17:03 UTCEPSS rescore
  22. 2026-08-18 13:48 UTCEPSS rescore
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-17 06:52 UTCEG score recompute
  25. 2026-08-17 06:51 UTCGHSA enrichment
Show 75 more
  1. 2026-08-16 14:56 UTCEPSS rescore
  2. 2026-08-16 02:24 UTCEG score recompute
  3. 2026-08-16 02:24 UTCGHSA enrichment
  4. 2026-08-16 02:14 UTCEPSS rescore
  5. 2026-08-15 01:30 UTCEPSS rescore
  6. 2026-08-14 23:09 UTCGHSA enrichment
  7. 2026-08-14 00:28 UTCEG score recompute
  8. 2026-08-14 00:28 UTCGHSA enrichment
  9. 2026-08-13 22:00 UTCEPSS rescore
  10. 2026-08-12 21:16 UTCEG score recompute
  11. 2026-08-12 21:16 UTCGHSA enrichment
  12. 2026-08-12 13:51 UTCEPSS rescore
  13. 2026-08-11 22:25 UTCEG score recompute
  14. 2026-08-11 22:25 UTCGHSA enrichment
  15. 2026-08-11 13:43 UTCEPSS rescore
  16. 2026-08-11 00:00 UTCEPSS rescore
  17. 2026-08-10 23:43 UTCGHSA enrichment
  18. 2026-08-09 16:44 UTCEG score recompute
  19. 2026-08-09 16:44 UTCGHSA enrichment
  20. 2026-08-09 13:46 UTCEPSS rescore
  21. 2026-08-08 18:03 UTCEG score recompute
  22. 2026-08-08 18:03 UTCGHSA enrichment
  23. 2026-08-08 16:37 UTCEPSS rescore
  24. 2026-08-07 19:11 UTCEG score recompute
  25. 2026-08-07 19:11 UTCGHSA enrichment
  26. 2026-08-06 20:29 UTCEG score recompute
  27. 2026-08-06 20:29 UTCGHSA enrichment
  28. 2026-08-06 13:46 UTCEPSS rescore
  29. 2026-08-05 21:48 UTCEG score recompute
  30. 2026-08-05 21:48 UTCGHSA enrichment
  31. 2026-08-05 19:17 UTCEPSS rescore
  32. 2026-08-04 23:06 UTCEG score recompute
  33. 2026-08-04 23:06 UTCGHSA enrichment
  34. 2026-08-04 15:10 UTCEPSS rescore
  35. 2026-08-04 10:38 UTCEPSS rescore
  36. 2026-08-03 15:55 UTCEG score recompute
  37. 2026-08-03 15:55 UTCGHSA enrichment
  38. 2026-08-03 10:36 UTCEPSS rescore
  39. 2026-08-02 12:38 UTCEG score recompute
  40. 2026-08-02 12:38 UTCGHSA enrichment
  41. 2026-08-02 02:27 UTCEPSS rescore
  42. 2026-08-01 13:56 UTCEG score recompute
  43. 2026-08-01 13:56 UTCGHSA enrichment
  44. 2026-08-01 04:16 UTCEPSS rescore
  45. 2026-07-31 05:52 UTCEG score recompute
  46. 2026-07-31 05:52 UTCGHSA enrichment
  47. 2026-07-30 16:28 UTCEPSS rescore
  48. 2026-07-30 01:30 UTCEPSS rescore
  49. 2026-07-29 11:49 UTCEG score recompute
  50. 2026-07-29 11:49 UTCGHSA enrichment
  51. 2026-07-28 15:36 UTCEPSS rescore
  52. 2026-07-27 14:13 UTCEPSS rescore
  53. 2026-07-27 09:05 UTCEG score recompute
  54. 2026-07-27 09:05 UTCGHSA enrichment
  55. 2026-07-26 14:54 UTCEPSS rescore
  56. 2026-07-26 14:54 UTCEPSS rescore
  57. 2026-07-25 14:18 UTCEPSS rescore
  58. 2026-07-24 14:17 UTCEPSS rescore
  59. 2026-07-23 14:18 UTCEPSS rescore
  60. 2026-07-23 03:11 UTCEG score recompute
  61. 2026-07-22 14:08 UTCEPSS rescore
  62. 2026-07-21 15:24 UTCEPSS rescore
  63. 2026-07-20 17:08 UTCEPSS rescore
  64. 2026-07-19 14:31 UTCEPSS rescore
  65. 2026-07-19 02:29 UTCEPSS rescore
  66. 2026-07-18 10:04 UTCEPSS rescore
  67. 2026-07-16 17:03 UTCEPSS rescore
  68. 2026-07-16 01:50 UTCGHSA enrichment
  69. 2026-07-15 16:57 UTCEPSS rescore
  70. 2026-07-15 02:00 UTCEPSS rescore
  71. 2026-07-14 13:58 UTCGHSA enrichment
  72. 2026-07-13 22:30 UTCEPSS rescore
  73. 2026-07-13 06:13 UTCEPSS rescore
  74. 2026-07-12 05:46 UTCEPSS rescore
  75. 2026-07-11 17:27 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 July 22, 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 0% probability of exploitation in the next 30 days, which ranks it in the top 68.5% of all scored CVEs.
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.

Dependency Blast Radius

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