CVE-2026-48758

EUVD-2026-44501
sigstore-js provides JavaScript libraries for interacting with Sigstore services. Prior to 3.2.1, the preAuthEncoding function in @sigstore/core uses Node.js ascii encoding when converting the PAE string to bytes, allowing payloadType to be mutated after signing without invalidating the signature and breaking the type-binding guarantee that DSSE is designed to provide. This issue is fixed in version 3.2.1.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 17.87%
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Amazon Linux Releases
Amazon Package
Release
nodejs24
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-debuginfo
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-debugsource
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-devel
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-docs
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-full-i18n
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-libs
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-libs-debuginfo
Amazon Linux 2023
1:24.18.0-1.amzn2023.0.1
fixed
nodejs24-npm
Amazon Linux 2023
1:11.16.0-1.24.18.0.1.amzn2023.0.1
fixed
v8-13.6-devel
Amazon Linux 2023
3:13.6.233.17-1.24.18.0.1.amzn2023.0.1
fixed
Common Weakness Enumeration
References
https://github.com/sigstore/sigstore-js/commit/b5aa4f1f8d2db0a9dfa6430fb114d9c2f1c304f7
https://github.com/sigstore/sigstore-js/pull/1657
https://github.com/sigstore/sigstore-js/releases/tag/%40sigstore%2Fcore%403.2.1
https://github.com/sigstore/sigstore-js/security/advisories/GHSA-jfc7-64v2-mr8c
https://github.com/sigstore/sigstore-js/security/advisories/GHSA-jfc7-64v2-mr8c