CVE-2026-42500

MEDIUMNVD 5.3

5.3

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: 0.0(none)
EPSS: 12.0%
KEV: Not listed

Published

May 29, 2026

Last Modified

May 29, 2026

References (4)

security@golanghttps://go.dev/cl/781500
security@golanghttps://go.dev/issue/79576
security@golanghttps://groups.google.com/g/golang-announce/c/uhYX90BlBvI
security@golanghttps://pkg.go.dev/vuln/GO-2026-5031

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.

GHSA-m6fh-wvw4-4629
GitHub Security AdvisoriesMedium
Decoding a paletted BMP file with an out-of-range palette index results in a panic when accessing...

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 19:21 UTCEG score recompute

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. 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 12.0% 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). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.

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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-42500

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CVE-2026-42500

📅 Published

🔄 Last Modified

🔗 References (4)

📣 Vendor Advisories for CVE-2026-42500(1)