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Vulnerabilities

Vulnerability · CVE-2026-31960

Quill provides simple mac binary signing and notarization from any platform.

Published Mar 11, 2026 · catalog updated Jun 17, 2026 · anchore quill

Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.1%
Remediation
Advisory link
Affected products
cpe anchore/quill

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.

Technical analysis

Mechanism and impact are interpreted from ingested advisories — not independent exploit research.

How to fix CVE-2026-31960

What to do

Three reads of the same public record: the decision, the versions on file, and the signals. Confirm the vendor advisory before you patch. This page does not publish exploit steps.

Executive

This is a public record, not a confirmed incident. CVE-2026-31960 is a medium issue in anchore quill (CVSS 5.3). CISA does not currently list it as known exploited. Next step: Compare installed versions with the linked vendor advisory before changing production.

System administrator

Check whether anchore quill is installed. Ranges on record: anchore/quill. Compare installed versions with the linked vendor advisory before changing production.

Security analyst

CVSS 5.3. EPSS 0.1%. CISA does not currently list it as known exploited. Weaknesses: CWE-770. Sources: cve_org, epss, nvd. Exploit links, when listed below, point at the original publisher.

Related intelligence

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 11, 2026 · NIST NVD

    Detected

    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, e

  2. Jun 17, 2026 · NIST NVD

    Updated

    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, e

Affected versions

Enter an installed version to get a verified affected / not-affected result against the ranges below.

  • cpe anchore/quillversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-31960

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-31960

    30-day exploitation probability 0.1%

    first.org
  • NIST NVDVulnerability recordCVE-2026-31960

    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,

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.