Medium 5.3Published May 29, 2026

CVE-2026-42500Panic when reading out of bound palette index in golang.org/x/image/bmp

Updated under an hour ago (Oct 26, 2026, 5:30 PM ET)

Does this affect you?

It affects golang.org/x/image/bmp. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for golang.org/x/image/bmp

Exploited in the last 30 days

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

CVSS: 5.3 MEDIUM (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-129
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Go
NVD analysis: Deferred
Record last updated: May 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

golang.org/x/image golang.org/x/image/bmp golang.org_x_image:bmp (from the name)	before 0.41.0	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.