CVE-2026-31960 DoS in Quill via unbounded read of HTTP response body during notarization
An attacker with network control can cause Quill to crash by sending large HTTP responses during notarization, requiring TLS interception or compromised CAs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-31960?
CVE-2026-31960 is a medium-severity denial of service vulnerability in anchore quill, published on 11 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Quill provides simple mac binary signing and notarization from any platform. Quill before version v0.7.1 has unbounded reads of HTTP response bodies during the Apple notarization process. Exploitation requires the ability to modify API responses from Apple's notarization service, which is not possible under standard network conditions due to HTTPS with proper TLS certificate validation; however, environments with TLS-intercepting proxies (common in corporate networks), compromised certificate authorities, or other trust boundary violations are at risk. When processing HTTP responses during notarization, Quill reads the entire response body into memory without any size limit. An attacker who can control or modify the response content can return an arbitrarily large payload, causing the Quill client to run out of memory and crash. The impact is limited to availability; there is no effect on confidentiality or integrity. Both the Quill CLI and library are affected when used to perform notarization operations. This vulnerability is fixed in 0.7.1.
Weakness: CWE-770
Which versions are affected by CVE-2026-31960?
3 open source packages ship an affected version, including github.com/anchore/quill. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/anchore/quill Go | All versions | 0.7.1 |
github.com/anchore/quill Go | All versions | 0.7.1 |
github.com/anchore/quill Go | All versions | 0.7.1 |
Products include Anchore Quill.
How do I fix CVE-2026-31960?
Upgrade github.com/anchore/quill to 0.7.1 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-31960 being exploited?
There is no known exploitation of CVE-2026-31960 in the wild and no public exploit code.
Other vulnerabilities in anchore quill
Sources
Also known as GHSA-g32c-4pvp-769g, GO-2026-4672.