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VulnerabilityPublished Updated

CVE-2026-31960: anchore quill · Unthrottled Resource Allocation

Affects anchore quillSource CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium : upgrade to 0.7.1 when convenient.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 0.7.1
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 11 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade quill and anchore/quill to 0.7.1.

Affected software

ProductAffectedFixed in
anchorequillAffected
  • <0.7.1
Fixed in
  • 0.7.1
GitHubanchore/quillpkg:github/anchore/quillOther threatsAffected
  • <0.7.1
Fixed in
  • 0.7.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

  1. Upgrade Quill to version 0.7.1 or later, where the vulnerability is fixed by enforcing limits on HTTP response body size during notarization.
  2. Review and restrict the use of TLS-intercepting proxies within the network, especially for developer environments, to prevent man-in-the-middle attacks on notarization traffic.
  3. Ensure that all certificate authorities trusted by the environment are legitimate and have not been compromised.
  4. Implement network segmentation to isolate build and notarization systems from untrusted networks.
  5. Monitor notarization processes for abnormal memory usage or crashes that could indicate exploitation attempts.
  6. Use endpoint security solutions to detect and prevent unauthorized interception or modification of HTTPS traffic.
  7. Educate developers and DevOps teams about the risks of TLS interception and encourage secure handling of notarization operations.
  8. Consider additional runtime memory limits or container resource constraints on systems running Quill to mitigate impact of potential resource exhaustion.

Description

CVE-2026-31960 is a medium-severity vulnerability in Anchore's Quill tool (versions before 0.7.1) that causes unbounded memory consumption during the Apple notarization process. Quill reads the entire HTTP response body from Apple's notarization service without size limits, which can lead to out-of-memory crashes if an attacker controls the response content. Exploitation requires the ability to intercept or modify HTTPS traffic, which is generally prevented by TLS certificate validation but possible in environments with TLS interception proxies or compromised certificate authorities. The impact is limited to availability, causing denial of service on the Quill client or library during notarization. There is no impact on confidentiality or integrity. The vulnerability is fixed in version 0.7.1.

References

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