CVE-2026-31960: Anchore Quill denial of service via unbounded read in notarization

CVE-2026-31960 · Severity: medium · CVSS 5.3 · Published 2026-03-11

Quill, a tool used for signing and notarizing macOS applications, is vulnerable to a denial-of-service attack. An attacker who can intercept or manipulate network traffic between Quill and Apple's notarization services can send a massive data payload that causes the tool to crash. This could disrupt software release pipelines and automated build processes, though it does not risk the theft of sensitive data.

Technologies: github.com/anchore/quill (Go). Vendors: Go.

Quick answers

Is CVE-2026-31960 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-31960 being exploited in the wild.
How severe is CVE-2026-31960?
Medium severity, with a CVSS score of 5.3, published 11 March 2026.
Which products and versions are affected?
github.com/anchore/quill (Go) < 0.7.1, SEMVER:introduced=0,fixed=0.7.1.
Is there a fix for CVE-2026-31960?
Yes. github.com/anchore/quill (Go): upgrade to 0.7.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-31960 attacked?
It is attacked from the adjacent network, in a software library.
Am I affected by CVE-2026-31960?
Check whether you run github.com/anchore/quill (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • github.com/anchore/quill (Go): upgrade to 0.7.1 or later
    go get github.com/anchore/quill@v0.7.1

Technical details

Quill versions prior to v0.7.1 fail to impose a size limit when reading HTTP response bodies into memory during the Apple notarization process (CWE-770). An attacker capable of modifying API responses from Apple's notarization service—such as through a compromised certificate authority or a TLS-intercepting proxy—can deliver an arbitrarily large payload. This results in an out-of-memory (OOM) condition, causing the Quill CLI or library to crash. The vulnerability is primarily an availability risk and is mitigated by standard HTTPS/TLS validation unless the trust boundary is already compromised. The issue is fixed in version 0.7.1.

Affected products

  • Anchore Quill < 0.7.1

Identifiers

  • CVE-2026-31960
  • GHSA-g32c-4pvp-769g
  • GO-2026-4672

Timeline

  • 2026-03-10: patched: Fixed in version v0.7.1
  • 2026-03-11: advisory

References

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