Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| sigstore | sigstore-js | < 3.2.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | nodejs24 +4 | 1:24.18.0-1.amzn2023.0.1 | ALAS2023-2026-1920 |
| Amazon Linux 2023 | nodejs24-npm | 1:11.16.0-1.24.18.0.1.amzn2023.0.1 | ALAS2023-2026-1920 |
| Amazon Linux 2023 | v8-13.6-devel | 3:13.6.233.17-1.24.18.0.1.amzn2023.0.1 | ALAS2023-2026-1920 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | pulumi-language-nodejs | 3.248.0-r1 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | @sigstore/core | < 3.2.1 | 3.2.1 | GHSA-jfc7-64v2-mr8c |
Advisories 1
- ALAS2023-2026-1920 Important: nodejs24 security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Jul 24, 2026