Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Quill, the Go package github.com/anchore/quill, before version 0.7.1 fetches the notarization submission log URL from Apple's API response without checking the scheme or whether the host is local or multicast. An attacker who can tamper with those API responses, such as through a TLS-intercepting proxy or a compromised certificate authority, could make Quill send requests to internal or attacker-chosen destinations, potentially exposing sensitive data. Upgrade to version 0.7.1 or later; no workaround is listed.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.3 | Medium | 3.1 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0009, the 1st percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:09 UTC First seen by agentprime
- 31 Oct 2026, 15:09 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-7q3q-5px6-4c5p
- OSV: GHSA-7q3q-5px6-4c5p
- github.com/anchore/quill/security/advisories/GHSA-7q3q-5px6-4c5p
- nvd.nist.gov/vuln/detail/CVE-2026-31959
- github.com/anchore/quill/commit/e41d66a517c2dc20ad8e9fbccffbdc6ba5ef0020
- developer.apple.com/documentation/notaryapi/get-submission-log
- github.com/anchore/quill
- github.com/anchore/quill/releases/tag/v0.7.1