GHSA-xx53-6qqj-gr7w

GHSA-xx53-6qqj-gr7w PUBLISHED CVSS 9.800000190734863 CRITICAL

Record from GitHub Advisory Database · Published February 24, 2026

Memory safety bugs present in Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 148.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

Package	Ecosystem	Fixed in
firefox	Wolfi	148.0-r0
firefox	Chainguard	148.0-r0

Risk scores

CVSS 3.1

9.800000190734863

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Vendor	Product	Versions
wolfi	firefox	0
chainguard	firefox	0

Timeline

Feb 24, 2026 CVE Published
Apr 10, 2026 Security Advisory

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln GHSA-xx53-6qqj-gr7w
vulnetix vdb fixes GHSA-xx53-6qqj-gr7w

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curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/GHSA-xx53-6qqj-gr7w/fixes/registry"

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